Question

4. Resolva as expressões numéricas
a) 2.(-3) +4-5 +6.(+9):- 6 + 12 =
b) 2.(-4) +6.(+9) =
c) 3.(-2) + 5 +4.(+12): -6+ 12 =
d) 4.(-2) + 5-5+5.(+9) =
e) 5.(-2) +3.- 4+5.(+3) + 12 =
urgente!​

Answer 1

Explicação passo-a-passo:

a) 2.(-3) +4-5 +6.(+9):- 6 + 12 =

-6-1+54:-6+12=

-6-1-9+12

-16+12=-4

b) 2.(-4) +6.(+9) =

-8+54=46

c) 3.(-2) + 5 +4.(+12): -6+ 12 =

-6+5+48:-6+12=

-6+5-8+12=

-14+17=3

d) 4.(-2) + 5-5+5.(+9) =

-8+5-5+45=

-13+50=37

e) 5.(-2) +3.- 4+5.(+3) + 12=

-10-12+15+12=

-22+27=5