Question

alguem min ajuda ai se souber pfv​

Answer 1

Resposta:

$\left(-\frac{3}{5}\right)+\left(-\frac{1}{2}\right)\frac{4}{-2}\\\\-\frac{3}{5}-\frac{1}{2}\cdot \frac{4}{-2}\\\\-\frac{3}{5}-\left(-1\right)\\\\\frac{1\cdot \:5}{5}-\frac{3}{5}\\\\\frac{1\cdot \:5}{5}-\frac{3}{5}\\\\\frac{1\cdot \:5-3}{5}\\\\1\cdot \:5-3\\\\5-3\\\frac{2}{5}$

Answer 2

Resposta:

forma exata ; 2/5

forma decimal ; 0,4

Explicação passo-a-passo: