Question

Me ajuda dou 12 pontos

Answer 1

Resposta:

a) 1 b) 8/45 c) 6/56 d) 3/25 e) 49/4

Explicação passo-a-passo:

a) 3/5+ 2/5 =5/5 = 1

b) 7/9 - 3/5 = [(7×5) - (3×9)]/(5×9) = (35 - 27)/45 = 8/45

c) 2/7 × 3/8 = 6/56

d) 3/5 ÷ 5 = 3/5 × 1/5 = 3/25

e) (7/2)^2 = 7/2 × 7/2 = 49/4