How do you subtract $- \frac{1}{10} - \frac{2}{5}$ $-1/10-2/5$ ?

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Answer 1 · 2016-11-23T08:11:59

$- \frac{1}{2}$ $-1/2$

Adding or subtracting with fractions requires a common denominator. In this case it will be 10.
Make equivalent fractions.

$- \frac{1}{10} - \frac{2}{5} \times \frac{2}{2}$ $-1/10-2/5 xx2/2$

$= \frac{- 1 - 4}{10}$ $= (-1-4)/10$

= $- \frac{5}{10}$ $-5/10$

= $- \frac{1}{2}$ $-1/2$

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