Répondre :
Réponse:
a- = 3x+7=2
collect like terms
3x=2-7
divide both sides by the coefficient of X
3x÷3 = -5÷3
X= -5 over three
Bonsoir;
3x+7=2
3x= 2-7
3x=-5
x= -5/7
2x-3=6-x
2x+x = 6 +3
3x = 9
x = 9/3
x=3
(2x+5)(x-2)=0
soit
2x+5 = 0
2x = -5
x= -5/2
x = -2,5
soit
x-2 = 0
x =2