What is -8 1/2 + 3 3/5 as a proper fraction?

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Answer 1 · 2016-11-20T23:57:11

$- 4 \frac{9}{10}$ $-4 9/10$

First, turn your proper fractions into improper fractions.

$- 8 \frac{1}{2} + 3 \frac{3}{5}$ $-8 1/2 + 3 3/5$

$- \frac{17}{2} + \frac{18}{5}$ $-17/2 + 18/5$

You need to create a common denominator so that you can add the numerators. Multiply the left by 5 and the right by 2.

$- \frac{85}{10} + \frac{36}{10}$ $-85/10 + 36/10$

$\frac{- 85 + 36}{10}$ $(-85 + 36) / 10$

$- \frac{49}{10}$ $-49/10$

Convert that back to a proper fraction.

$- 4 \frac{9}{10}$ $-4 9/10$