Question

pfvr me ajude nessas contas ​

Answer 1

Resposta: Está certinho!

Explicação passo a passo:

1) a) 4/7 + 2/7 = 6/7 b) 9/11 - 2/11 = 7/11

c) 5/8 + 3/12 = 7/8 d) 2/3 + 1/2 - 1/6 = 1

e) 5+ 2/3 = 17/3 f) 1/24 + 5/36 + 1/42 = 103/504

2) a) 5/3 × 2/7 = 10/21 b) 5/3 ÷ 2/7 = 35/6

c) 49/15 × 25/14 × 6/35 = 1 d) 2/3 ÷ 6 = 1/9

e) 3/5 ÷ 1/3 = 9/5 f) 8 + 3 × 1/5 = 43/5

3) a) (1/5)² = 1/25 b) (4/7)² = 16/49 c) (5/6)³ = 125/216

Bons estudos!