Sagot :
a)(+8) - (-4) = + 12
b ) (-4 ) + (+10 ) = +6
c) (-13)-(-3) = - 10
d)(+15) - ( -15 ) = 30
e)(-22) - (-22) = - 0
f) (+7) - ( +12) = - 5
b ) (-4 ) + (+10 ) = +6
c) (-13)-(-3) = - 10
d)(+15) - ( -15 ) = 30
e)(-22) - (-22) = - 0
f) (+7) - ( +12) = - 5