Question

Resolva as expressões a seguir:

a) [ –10 + ( –2) • ( +3)] : [ –2 • –2)] =
b) [( 15 – 7) : ( –1 • 4)] –11 =
c) – { +9 – [ –2 • ( –5 + 9)] – ( –3)} =
d) –5 • { +2 – [ –3 • ( –5 + 3)]} =

(Fazer passo-a-passo, por favor!)

Answer 1

Explicação passo-a-passo:

a) [ –10 + ( –2) • ( +3)] : [ –2 • –2)]

(-10 - 6)/4 = -4

b) [( 15 – 7) : ( –1 • 4)] –11

8/-4 - 11 = -13

c) – { +9 – [ –2 • ( –5 + 9)] – ( –3)}

- (9 - (-2*4) + 3 ) = -(9 + 8 + 3) = -20

d) –5 • { +2 – [ –3 • ( –5 + 3)]}

-5 * (2 - (-3 * -2)) = -5*(2 - 6) = 20

Answer 2

Resposta:

Explicação passo-a-passo:

a) [ –10 + ( –2) • ( +3)] : [ –2 • –2)] =

[-10-6]:4 = -16:4 = -4

b) [( 15 – 7) : ( –1 • 4)] –11 =

[8:-4]-11= -2-11= -13

c) – { +9 – [ –2 • ( –5 + 9)] – ( –3)} =

- {9-[-8]+3}= - 20

d) –5 • { +2 – [ –3 • ( –5 + 3)]} =

20