Question

2) Calcule
a) ( + 7)-(+3)
b) ( + 5)-(-2)
c) (-3) - (+8)
d) (-1)-(-4)
e) ( + 3)-(+8)
7) (+9)-(+9)​

Answer 1

Explicação passo-a-passo:

2) a) 7 - 3 = 4

b) 5 + 2 = 7

c) -3 - 8 = -11

d) -1 + 4 = 3

e) 3 - 8 = -5

f) 9 - 9 = 0