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(5*(x+2))/2 = 3*x+4 // - 3*x+4
(5*(x+2))/2-(3*x)-4 = 0
(5*(x+2))/2-3*x-4 = 0
(5*(x+2))/2+(-3*2*x)/2+(-4*2)/2 = 0
5*(x+2)-3*2*x-4*2 = 0
10-x-8 = 0
2-x = 0
(2-x)/2 = 0
(2-x)/2 = 0 // * 2
2-x = 0
2-x = 0 // - 2
-x = -2 // * -1
x = 2
x = 2
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