svp c pour demain !!! : 2x -4=3 - 5x et x - 2 =5x -4

2x-4 = 3-5x
2x-4+4+5x=3+4 -5x+5x
7x /7= 7/7
x=1

x-2=5x-4
x-2-x = 5x-4-x
-2 =4x-4+4
-2+4 =4x
2/4 =4x/4
0.5=x
x=0.5

2x - 4 = 3 - 5x
2x + 5x = 4 + 3
7x = 7
x = 1

x - 2 = 5x - 4
x - 5x = 2 - 4
-4x = -2
x = 1 / 2 ou 0,5