Réponse :
Explications étape par étape :
F =8-6x3-(9-5) G=(12+(-6-3))x((-9+15)x4) H= 7-5+8:4-9
= 8-6x3-4 =(12-9) x (6x4) = 7-5 +2 -9
=8-18-4 = 3 x 24 = 2+2 -9
= -10-4 = 72 = -5
= -6
I = -3-4+2x7 -5 J= (-5-(8-18)) x (( -3+ 4) x 4)
= -3-4+14-5 = (-5-8+18) x (1 x 4)
= -7+14 -5 = (-5+10) x 4
= -12 + 14 = 5 x 4
= 2 = 20
