Question

elimine os parenteses
a) 30 - (5 + 3) + (4 - 2) =
b) 15 + (8 + 2) - 3 =
c) 15 - (10 - 1 - 3) - (2 - 4) =
d) 23 - (2 + 8) - 7 + (-2) =
e) 7 - (8-3) + 1 + (-7) - (4) =

Answer 1

Resposta:

a) 34

b) 22

c) 19

d) 4

e) 0

Explicação passo-a-passo:

a) 30-8+2

a) 32+2

a) 34

b) 15+10-3

b) 25-3

b) 22

c) 15+(9-3)-(-2)

c) 15+6-(-2)

c) 21-(-2)

c) 19

d) 23-10-7+(-2)

d) 13-7+(-2)

d) 6 +(-2)

d) 4

e) 7-5+1+(-7)-(-4)

e) 2+1+(-7)-(-4)

e) 3+(-7)-(-4)

e) (-4)-(-4)

e) 0