Question 260109
solve for x 
7/(4x) = 5/(6x)-3

To get rid of the denominators we need to multiply all terms by a common multiple of 4x and 6x. 12x is the smallest such multiple.

So we multiply both sides of the equation by 12x:

(12x)*7/(4x) = (12x)*5/(6x) - (12x)*3 =
(12x/4x)*7 = (12x/6x)*5 - 36x
3*7 = 2*5 - 36x
36x = 10-21
36x = -11
x=-11/36