Question

Preciso de ajuda para essa questão!​

Answer 1

Resposta:

$b) 3,75\\ - 4,00\\---\\ -0,25\\\\c) -0,64\\-0,28\\------\\-0,36$

Explicação passo-a-passo:

a)

$-\frac{5}{8} +\frac{5}{6} \\mmc = \\6,8 :2 \\ 3 , 4 : 2 \\ 3 , 2 : 2 \\ 3 , 1 : 3 \\ 1 , 1 \\2.2.2.3 = 2^3.3 = 8.3 = 24\\-\frac{5(3)+5(4)}{24} \\-15+20\\5\\---------------\\d) -\frac{5}{6} +\frac{3}{4} \\mmc= \\6 , 4 :2\\3 , 2 :2 \\3 ,1 : 3\\1, 1 \\2.2.3 = 2^2.3 = 4.3 = 12\\-\frac{5(2)+3(3)}{12} \\-10+9\\-1$