Răspuns :
-5x +3 = 2x +4
-5x -2x = 4 - 3
-7x = 1
x = - 1/7
4x-2=3x +3
4x - 3x = 3 +2
x = 5
5x-3= -2x +3
5x + 2x = 3 +3
7x = 6
x = 6/7
-5x -2x = 4 - 3
-7x = 1
x = - 1/7
4x-2=3x +3
4x - 3x = 3 +2
x = 5
5x-3= -2x +3
5x + 2x = 3 +3
7x = 6
x = 6/7