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(2*x+4)/5+2 = 12 // - 12
(2*x+4)/5-12+2 = 0
(2*x+4)/5+(-12*5)/5+(2*5)/5 = 0
2*x-12*5+2*5+4 = 0
2*x-56+10 = 0
2*x-46 = 0
(2*x-46)/5 = 0
(2*x-46)/5 = 0 // * 5
2*x-46 = 0
2*x-46 = 0 // + 46
2*x = 46 // : 2
x = 46/2
x = 23
x = 23
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