Question

efetue os cálculos algébricos:

$- \frac{5}{8} + \frac{5}{6} =$
$- \frac{5}{6} + \frac{3}{4} =$
​

Answer 1

Resposta:

A) Será igual a 5/24.

MMC(8, 6) = 24

- 5/8 + 5/6 = [(-5*3) + (5*4)]/24 = (-15 + 20)/24 = 5/24

B) Será igual a -1/12.

MMC(6, 4) = 12

- 5/6 + 3/4 = [(-5*2)+(3*3)]/12 = (-10+9)/12 = -1/12.