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