Question

вычисли 2/30+7/30+9/50

Answer 1

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