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(4*x-28)/3 = 2*x // - 2*x
(4*x-28)/3-(2*x) = 0
(4*x-28)/3-2*x = 0
(4*x-28)/3+(-2*3*x)/3 = 0
4*x-2*3*x-28 = 0
-2*x-28 = 0
(-2*x-28)/3 = 0
(-2*x-28)/3 = 0 // * 3
-2*x-28 = 0
-2*x-28 = 0 // + 28
-2*x = 28 // : -2
x = 28/(-2)
x = -14
x = -14
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