Question

2supra 5*(3 supra 2-7 supra 8).

Answer 1

Răspuns:

$\frac{2}{5}$ ×($\frac{3}{2}$-$\frac{7}{8}$) (aducem la numitor comun fractiile din paranteza)

$\frac{2}{5}$ × ($\frac{12}{8}$-$\frac{7}{8}$)

$\frac{2}{5}$ ×$\frac{5}{8}$= $\frac{10}{40}$ (Simplificam cu 10)

=>$\frac{1}{4}$