To subtract mixed numbers with like denominators, we subtract

• whole numbers from whole numbers, and

• fractions from fractions.

With that in mind, let's subtract our mixed numbers.

• Subtracting the whole numbers, we get \[ 2-1 = {\color{red}{1}}. \]

• Subtracting the fractions, we get \[ \dfrac 3 4 - \dfrac 2 4 = \dfrac{3-2}{4} = {\color{blue}{\dfrac 1 4}}. \]

Finally, we combine the resulting whole number and fraction to create a mixed number: \[ 2\,\dfrac 3 4 - 1\,\dfrac 2 4 = {\color{red}{1}}{\color{blue}{\dfrac 1 4}} \]

To subtract mixed numbers with like denominators, we subtract

• whole numbers from whole numbers, and

• fractions from fractions.

With that in mind, let's subtract our mixed numbers.

• Subtracting the whole numbers, we get \[ 11 - 9 = {\color{red}{2}}. \]

• Subtracting the fractions, we get \[ \dfrac{8}{9} - \dfrac{4}{9} = \dfrac{8 - 4}{9} = {\color{blue}{\dfrac{4}{9}}}. \]

Finally, we combine the resulting whole number and fraction to create a mixed number: \[ 11 \,\dfrac{8}{9} - 9 \,\dfrac{4}{9} = {\color{red}{2}} \,{\color{blue}{\dfrac{4}{9}}} \]

To subtract mixed numbers with like denominators, we subtract

• whole numbers from whole numbers, and

• fractions from fractions.

With that in mind, let's subtract our mixed numbers.

• Subtracting the whole numbers, we get \[ 2-2 = {\color{red}{0}}. \]

• Subtracting the fractions, we get \[ \dfrac 3 4 - \dfrac 2 4 = \dfrac{3-2}{4} = {\color{blue}{\dfrac 1 4}}. \]

Finally, since the whole number part is zero, we have only the fractional part: \[ 2\,\dfrac 3 4 - 2\,\dfrac 2 4 = {\color{blue}{\dfrac 1 4}} \]

To subtract mixed numbers with like denominators, we subtract

• whole numbers from whole numbers, and

• fractions from fractions.

With that in mind, let's subtract our mixed numbers.

• Subtracting the whole numbers, we get \[ 4-4 = {\color{red}{0}}. \]

• Subtracting the fractions, we get \[ \dfrac 5 7 - \dfrac 2 7 = \dfrac{5-2}{7} = {\color{blue}{\dfrac 3 7}}. \]

Finally, since the whole number part is zero, we have only the fractional part: \[ 4\,\dfrac 5 7 - 4 \,\dfrac 2 7 = {\color{blue}{\dfrac 3 7}} \]

To subtract mixed numbers with like denominators, we subtract

• whole numbers from whole numbers, and

• fractions from fractions.

With that in mind, let's subtract our mixed numbers.

• Subtracting the whole numbers, we get \[ 3-2 = {\color{red}{1}}. \]

• Subtracting the fractions, we get \[ \dfrac 1 8 - \dfrac 1 8 = \dfrac{1-1}{8} = \dfrac{0}{8} = {\color{blue}0}. \] So, the fractional part is zero. This is because zero divided by any number gives zero.

Finally, we combine the resulting whole number and fraction to create a mixed number: \[ 3\,\dfrac 1 8 - 2\,\dfrac 1 8 = {\color{red}{1}} + {\color{blue}0} = {\color{red}{1}}. \]

To subtract mixed numbers with like denominators, we subtract

• whole numbers from whole numbers, and

• fractions from fractions.

With that in mind, let's subtract our mixed numbers.

• Subtracting the whole numbers, we get \[ 8 - 6 = {\color{red}{2}}. \]

• Subtracting the fractions, we get \[ \dfrac{1}{2} - \dfrac{1}{2} = \dfrac{1 - 1}{2} = \dfrac{0}{2} = {\color{blue}0}. \] So, the fractional part is zero. This is because zero divided by any number gives zero.

Finally, we combine the resulting whole number and fraction to create a mixed number:

\[ 8 \,\dfrac{1}{2} - 6 \,\dfrac{1}{2} = {\color{red}{2}} + {\color{blue}0} = {\color{red}2} \]

To subtract mixed numbers with like denominators, we subtract

• whole numbers from whole numbers, and

• fractions from fractions.

With that in mind, let's subtract our mixed numbers.

• Subtracting the whole numbers, we get \[ 6 - 2 = {\color{red}{4}}. \]

• Subtracting the fractions, we get \[ \dfrac{3}{4} - \dfrac{1}{4} = \dfrac{3 - 1}{4} = \dfrac{2}{4}. \] We can simplify this fraction by dividing the numerator and denominator by $2{:}$ \[ \dfrac{2}{4} = \dfrac{2 \div 2}{4 \div 2} = {\color{blue}{\dfrac{1}{2}}} \]

Finally, we combine the resulting whole number and fraction to create a mixed number:

\[ 6 \,\dfrac{3}{4} - 2 \,\dfrac{1}{4} = {\color{red}{4}}\,{\color{blue}{\dfrac{1}{2}}} \]

To subtract mixed numbers with like denominators, we subtract

• whole numbers from whole numbers, and

• fractions from fractions.

With that in mind, let's subtract our mixed numbers.

• Subtracting the whole numbers, we get \[ 7 - 6 = {\color{red}{1}}. \]

• Subtracting the fractions, we get \[ \dfrac{7}{8} - \dfrac{3}{8} = \dfrac{7 - 3}{8} = \dfrac{4}{8}. \] We can simplify this fraction by dividing the numerator and denominator by $4{:}$ \[ \dfrac{4}{8} = \dfrac{4 \div 4}{8 \div 4} = {\color{blue}{\dfrac{1}{2}}} \]

Finally, we combine the resulting whole number and fraction to create a mixed number:

\[ 7 \,\dfrac{7}{8} - 6 \,\dfrac{3}{8} = {\color{red}{1}}\,{\color{blue}{\dfrac{1}{2}}} \]