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2014-01-19T10:13:50+01:00
6x -5 = 3x+1
6x -3x = +5 +1
+3x = 6
x = 6/3 = 2
7-4x=9-2x
-4x +2x = -7 +9
-2x = +2
x = 2/2 = 1
3x-4=8-7x
3x +7x = +4 +8
10x = 12
x = 12/10 = 6/5
5x-1=8x+11
5x -8x = 1 +11
-3x = 12
x = 12/3 = 4
e) 6x-5=10x 
(x+5) + (x-1)=0
x+5=0
x = -5
x-1 = 0
x = +1
(-x+8) -(x-1)=0
-x = -8
x = 8
-(x-1) = 0
-x +1=0
-x = -1
x = 1