Sagot :
bonjour
5 - 2 x = 0
- 2 x = - 5
x = 5/2
- 2 x = - 3
x = 3 /2
4 x + 2 = 3 x + 4
4 x - 3 x = 4 - 2
x = 2
4 x + 1 = 5
4 x = 5 - 1
4 x = 4
x = 1
5-2x=0
-2x=-5
x=-5/-2
x=5/2 ou 2,5
-2x=-3
x=-3/-2
x=3/2
4x + 2 = 3x + 4
4x + 3x + 2 = 4
7x + 2 = 4
7x = 4 - 2
7x = 2
x = 2/7
4x + 1 = 5
4x = 5-1
4x = 4
x = 4/4
x = 1
-2x=-5
x=-5/-2
x=5/2 ou 2,5
-2x=-3
x=-3/-2
x=3/2
4x + 2 = 3x + 4
4x + 3x + 2 = 4
7x + 2 = 4
7x = 4 - 2
7x = 2
x = 2/7
4x + 1 = 5
4x = 5-1
4x = 4
x = 4/4
x = 1