6x-3=15x+8
7x = -11
x = -11/7
-2x+3=3x+8
5x = -5
x = -1
2a-5=6a-4
4a = -1
a = -1/4
7(x-6)=3(x-14)+8
7x - 42 = 3x - 42 + 8
4x = 8
x = 2
1.4x+(-4.2-5x) = 2(x5)-4(0.1x+8)
1,4x - 4,2 -5x = 10x - 0,4x - 32
13,2x = 27,8
x = 278/132 = 139/66
En espérant t'avoir aidé.
