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# Add and subtract fractions with like denominators

Adding and subtracting fractions with the same denominator
You can add and subtract like fractions easily - simply add or subtract the numerators and write the sum over the common denominator.

$\frac{2}{9}+\frac{6}{9}=\frac{2+6}{9}=\frac{8}{9}$

$\frac{6}{9}-\frac{2}{9}=\frac{6-2}{9}=\frac{4}{9}$

Calculate (simplify the resulting fraction) $\frac{6}{7}\;-\;\frac{1}{7}$
 Solution: