Sagot :
2[2-(4+2x)]=6[x-4(x+1)]
2[2-4-2x]=6[x²-3x-4]
4-8-4x=6x²-18x-24
-4-4x=6x²-18x-24
0=6x²-14x-20
0=2(3x-7x-10)
0=2(3x-10)(x+1)
2[2-4-2x]=6[x²-3x-4]
4-8-4x=6x²-18x-24
-4-4x=6x²-18x-24
0=6x²-14x-20
0=2(3x-7x-10)
0=2(3x-10)(x+1)
2(-2x-2) = 6(-3x - 4)
2x + 2 = 9x + 12
7x = -10
x = -10/7 ?
2x + 2 = 9x + 12
7x = -10
x = -10/7 ?