Question

Sabendo que A=⅓-¾ é B=-⅔+½, calcule A•B

Answer 1

Resposta:

Olá!

$A = \frac{1}{3} - \frac{3}{4}$

$A = \frac{(12:3)*1-(12:4)*3}{12}$

$A = \frac{(4-9)}{12}$

$A = -\frac{5}{12}$

$B= \frac{-2}{3} + \frac{1}{2}$

$B= \frac{(6:3)*(-2)+(6:2)*1}{6}$

$B= \frac{(-4)+(3)}{6}$

$B= -\frac{1}{6}$

$A * B = -\frac{5}{12} * (-\frac{1}{6})$

$A*B= \frac{5}{72}$