Question

Calcule x-y:
a)x=+6 e y=+5
b)x=-7 e y=+8
c)x=-9 e y=-5
d)x=+12 e y=-15

Answer 1

a) +6 - (+5) = 1

b) -7 - (+8) = -15

c) -9 - (-5) = -4

d) +12 - (-15) = 27