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(3/2)*x+7/5 = (1/4)*x-(7/10) // - (1/4)*x-(7/10)
(3/2)*x-((1/4)*x)+7/5+7/10 = 0
(3/2)*x+(-1/4)*x+7/5+7/10 = 0
5/4*x+21/10 = 0 // - 21/10
5/4*x = -21/10 // : 5/4
x = -21/10/5/4
x = -42/25
x = -42/25
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