Vous pourriez m'aider à résoudre c équation svp A.4x+7=-6x-4-2x B.10x-10-6x=6-5x C.9/7x=-21/4 D.4x-8x+2=-7-6x+12

A. 4x+7 = -6x-4-2x
4x+7 = -8x-4
4x+8x = -4-7
12x = -11
x = -11/12

B. 10x-10-6x = 6-5x
4x-10 = 6-5x
4x+5x = 6+10
9x = 16
x = 16/9

C. 9/7x = -21/4
(9/7)*x = -21/4
x = (-21/4)/(9/7)
x = (-21/4)*(7/9)
x = (-3*7*7)/(4*3*3)
x = -49/12

D. 4x-8x+2 = -7-6x+12
-4x+2 = 5-6x
-4x+6x = 5-2
2x = 3
x = 3/2