Sagot :
X-1=(3x-4)/2
(2(x-1))/2=(3x-4)/2
(2x-2)=3x-4
2x-3x=-4+2
-x=-2
X=2
1-(2-3x)/5=2x
5/5-(2-3x)/5=2x
(5-2-3x)/5=2x
(3-3x)/5=10x/5
3=10x+3x
3=13x
X=3/13
(2(x-1))/2=(3x-4)/2
(2x-2)=3x-4
2x-3x=-4+2
-x=-2
X=2
1-(2-3x)/5=2x
5/5-(2-3x)/5=2x
(5-2-3x)/5=2x
(3-3x)/5=10x/5
3=10x+3x
3=13x
X=3/13
x - 1 = 3x -4 = 2x -2 = 3x -4
2 2 2
2x-2 = 3x-4
2x -3x = 2 -4
-x = -2
x = 2
1 - 2-3x = 2x = 5 -2 -3x = 10x
5 5 5 5
5 -2 -3x = 10x
3 -3x = 10 x
-3x = -3 +10x
-3x -10x = -3
-13 x = -3
x = -3/13