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(2*x+4)/7-3 = 25 // - 25
(2*x+4)/7-25-3 = 0
(2*x+4)/7+(-25*7)/7+(-3*7)/7 = 0
2*x-25*7-3*7+4 = 0
2*x-171-21 = 0
2*x-192 = 0
(2*x-192)/7 = 0
(2*x-192)/7 = 0 // * 7
2*x-192 = 0
2*x-192 = 0 // + 192
2*x = 192 // : 2
x = 192/2
x = 96
x = 96
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