Question

calcule as expressões a) 1+(-2+5)+[-6+5-8)]
b) -4+5-5+4-3+9+3
c) -2+3(-7+9)

Answer 1

Resposta:

A) -5

B) 9

C)3

Explicação passo-a-passo:

A) 1+(-2+5)+[-6+5-8]

1+3+[-6+5-8]

1+3[-1-8]

1+3-9

4-9

-5

B) -4+5-5+4-3+9+3

1-5+4-3+9+3

-4+4-3+9+3

0-3+9+3

-3+9+3

6+3

9

C) -2+3(-7+9)

-2+3+2

1+2

3