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2014-11-01T10:03:29+01:00
5(2-3x)+4=0
10 -15x +4 = 0
14 -15 x = 0
-15x = -14
x = 14/15 

7(4x+1)=3(5x-1)
28x +7 = 15x -3
28x -15x = -3 - 7
13x = -10
x = -10/13

-3(x+1)=4x
-3x -3 = 4x
-3x -4x = 3
-7x = 3
 x =-3/7