Question

Determine o valor das somas abaixo:

a) (+8) + (+5) =

b) (+17) + (-12) =

c) (+38) + (-12) =

d) (-38) + (+12) =

Answer 1

a) 8+5 = 13

b) 17-12 = 5

c) 38-12 = 26

d) -38+12 = -26

Answer 2

a) 8 + 5
13

b) 17 - 12
5

c) 38 - 12
26

d) -38 + 12
-26