Question

subtract.
$\frac{-7}{10}-\frac{-9}{10}=$

Explanation:

Step1: Rewrite the subtraction as addition

Subtracting a fraction is adding its opposite. So $\frac{-7}{10}-\frac{-9}{10}=\frac{-7}{10}+\frac{9}{10}$.

Step2: Add the numerators

Since the denominators are the same, we add the numerators: $\frac{-7 + 9}{10}$.

Step3: Calculate the result

$-7+9 = 2$, so $\frac{-7 + 9}{10}=\frac{2}{10}=\frac{1}{5}$.

Answer:

$\frac{1}{5}$