Sagot :

maudmarine

Bonsoir,

a) (+9)-(+12)  = 9 - 12 = - 3

b) (-10)-(+6) = - 10 - 6 = - 16

c) (-2)-(-17) = - 2 + 17 = 15

d) (-13)-(-5) = - 13 + 5 = - 8

e) (+8)-(-1) = 8 + 1 = 9

f) 0-(-72) = 0 + 72 = 72.

MitchAlexandrine2314

A=(+9)-(+12)

=+9-12

=-3

B=(-10)-(+6)

=-10-6

=-16

C=(-2)-(-17)

=-2+17

=15

D=(-13)-(-5)

=-13+5

=-8

E=(+8)-(-1)

=8+1

=9

F=0-(-72)

=0+72

=72