Question

1| Calcule o valor das expressões.

a) 12 - (-3) + (-1) - (-7)
b) -5 + (-2) - 6 - (-8)
c) (-4 + 7 - 1) - (-2 - 4 - 6)
d) (7-10)+(10-7)-(-10-7)

Answer 1

A) 12+3-1+7
12+9
21

B)-5-2-6+8
-13+8
-5

C)(2)-(-12)
2+12
14

D)-3+3+17
17