Question

Вычислите.
-9/20+7/20;

Answer 1

- 9/20 + 7/20 = - 2/20 = - 1/10
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Answer 2

$- frac{9}{20} + frac{7}{20} = -frac{2}{20} = -frac{1}{10}$

$frac{1}{10}$ в дестичной -0,1