Question

A) (2-½)^-2×(1+⅓)^-1

B) (⅘-½)^-3÷(3+⅓)^2

Answer 1

Resposta:

Letra a:

$A) (2-\frac{1}{2}) ^{-2} . (1 + \frac{1}{3})^{-1} \\\\(\frac{3}{2})^{-2} . (\frac{4}{3}) -1\\\\(\frac{2}{3})^{2} . \frac{3}{4} \\\\\frac{4}{9} . \frac{3}{4} \\\\= \frac{1}{3}$

Explicação passo a passo: