Question

15 − (4 − 3) + (10 − 5) =
b) 25 − (10 − 5 + 3) + 1 =
c) (5 × 3) − 10 + (10 ÷ 2) =
d) (1 × 7) + (12 ÷ 3 + 6) =
e) 55 − 3 × 8 =

Answer 1

Oi, bom dia!

Resposta:

15) a) 4.

b) 18.

c) 10.

d) 17.

e) 31.

Explicação passo-a-passo:

15) a) – (4 – 3) + (10 – 5) =

– 4 + 3 + 10 – 5 =

– 9 + 13 = 4.

b) 25 – (10 – 5 + 3) + 1 =

25 – 10 + 5 – 3 + 1 =

31 – 13 = 18.

c) (5 × 3) – 10 + (10 ÷ 2) =

15 – 10 + 5 =

20 – 10 = 10.

d) (1 × 7) + (12 ÷ 3 + 6) =

7 + (4 + 6) =

7 + 4 + 6 = 17.

e) 55 – 3 × 8 =

55 – 24 = 31.

Espero ter te ajudado e bons estudos para você! ;)