Question

Помогите решить пример 7/10+1/5+3/10+4/5

Answer 1

$\frac{7}{10}+ \frac{1}{5}+ \frac{3}{10}+ \frac{4}{5}= \\ = \frac{7+3}{10}+ \frac{1+4}{5}= \frac{10}{10}+ \frac{5}{5}=1+1=2$