Question

Calcule as expressões
A) 15-(3-2)+(7-4)
B) 25-(8-5+3)-(12-5-8)

Answer 1

A)
15-(3-2)+(7-4)
15-1+3
14+3
17

B)
25-(8-5+3)-(12-5-8)
25-(3+3)-(7-8)
25-6-(-1)
19+1
20

Answer 2

Olá, boa noite ☺

Resolução:

a)

15-(3-2)+(7-4)

15 - (+1) + (+3)

15 - 1 + 3.

17.

b)

25-(8-5+3)-(12-5-8)

25-(+6) - (-1)

25 - 6 + 1.

19 + 1.

 = 20.

Bons estudos :)