Question

2 5 ДРОБЬ+(-1,7+ 3 5 дробь) решите 1 строчкаа 2 знак 3 скобки

Answer 1

$frac{2}{5}+(-1,7+ frac{3}{5}$=$frac{2}{5}+(1 frac{7}{10}+ frac{3}{5}$=$frac{2}{5}+(1 frac{7}{10}+ frac{6}{10})= frac{2}{5}+(-1 frac{1}{10})= frac{4}{10}+1 frac{1}{10}$=$1,5$