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7-((3/4)*(7-(2*x)))+18 = 0
(-3/4)*(7-2*x)+7+18 = 0
7-3/4*(7-2*x)+18 = 0
7-3/4*(7-2*x)+18 = 0
3/2*x+7/4+18 = 0
3/2*x+79/4 = 0
3/2*x+79/4 = 0
3/2*x+79/4 = 0 // - 79/4
3/2*x = -79/4 // : 3/2
x = -79/4/3/2
x = -79/6
x = -79/6
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