Question

7) Calcule as expressões:a) (-15+4)+ -18+(-3-7+5)]b)-1+(-2+5)+[4(-6+5-8)]c)-4+5-5+4-3+9+3

Answer 1

Resposta:

Explicação passo-a-passo:

A- (-15+4)+ -18+(-3-7+5)

-11-18+(-5)

-11-18-5

-29-5

-34

B- -1+(-2+5)+[4(-6+5-8)]

-1-2+5+(-24+25-32)

-1-2+5-24+25-32

-3-19-7

-29

C- -4+5-5+4-3+9+3

1-1+6+3

6+3

9