Question

Вычисли 2/30+7/30+9/50

Answer 1

$\frac{2}{30} +\frac{7}{30}+\frac{9}{50}=\frac{2+7}{30}+\frac{9}{50}=\frac{9}{30}+\frac{9}{50}=\frac{9*5+9*3}{150}=\frac{72}{150}=\frac{12}{25}$