Sagot :
Réponse:
A=11+2(x-6)+4(-3x-6)
A=11+2x-12-12x-24
A=-25-10x
B=-2(x-5)-3(7-4x)
B=2x-10-21+12x
B=14x-31
C= 8+2y-5(2y-6)+4
=8+2y-10y+30+4
=-8y+42
D=-7y-4(3y-6)+3+2(3y-7)
=-7y-12y+24+3+6y-14
=-13y+13
E=-5z+5z(z-3)-7(6-8z)
=-5z+5z*2 -15z-42+57z
=5z*2+37z-42
(Le *2 c’est au carré)
=8+2y-10y+30+4
=-8y+42
D=-7y-4(3y-6)+3+2(3y-7)
=-7y-12y+24+3+6y-14
=-13y+13
E=-5z+5z(z-3)-7(6-8z)
=-5z+5z*2 -15z-42+57z
=5z*2+37z-42
(Le *2 c’est au carré)