Question

1. Calcule o valor das expressões.
a) 12-(-3)+(-1)-(-7) 2
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 -(-14)

15-1+14

14-14=0

b) -5-2-6+8=

-13+8= -5

c) 2 - (-12)

2+12= 14

d) -3 +3 +17 = 17