Question

subpunctul 39 doar !!!

Answer 1

= $\frac{4}{5}$ - $\frac{4}{5}$ x ($\frac{5}{4}$ + 1 + $\frac{2}{10}$) =
= $\frac{4}{5}$ - $\frac{4}{5}$ x ($\frac{25+20+4}{20}$) =
= $\frac{4}{5}$ - $\frac{4}{5}$ x $\frac{49}{20}$ =
= $\frac{4}{5}$  - $\frac{49}{25}$ =
= $\frac{20-49}{25}$ =
= $\frac{-29}{25}$