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(2*x)/4+5 = -7*x // + -7*x
(2*x)/4-(-7*x)+5 = 0
(2*x)/4+7*x+5 = 0
15/2*x+5 = 0 // - 5
15/2*x = -5 // : 15/2
x = -5/15/2
x = -2/3
x = -2/3
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