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60x - 120 = 35x + 20 + 4x - 14
60x - 35x - 4x = 20 - 14 + 120
21x = 126
x = 126 / 21
x = 6
60x-120=35x+20+4x-14
60x-120=39x+6
60x-39x=6+120
21x=126
x=6
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