calculer chaque xpression a=(-53)+(+45) b=(-1)+(-99) c=(-22,7)-(+22,8) d=(+5,6)-(-3,76)

bonjour

a = - 53 + 45 = 8

b = - 1 - 99 = - 100

c = - 22.7 - 22.8 = - 0.1

d = 5.6 + 3.76 = 9.36