Question

A) +4 +5 -6 +2b=
B) -4 -5 -6 =
C) +8 -4 -8 +4 =
D) 5 + 2 + 7 =
E) 10 + 15 = 7 + 2 =

Answer 1

A) +4 +5 -6 +2
= 9 - 4
= 5

B) -4 -5 -6
= -9-6
= - 15

C) +8 -4 -8 +4
= 4 - 4
= 0

D) 5 + 2 + 7
= 7+7
= 14

E) 10 + 15 = 25

7 + 2 = 9

Answer 2

Explicação passo-a-passo:

a) +4+5-6+2=5

b)-4-5-6=-15

c)8-4-8+4=0

d)5+2+7=14

e) 10+15=25

f)7+2=9