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(5/4)*x+9/2 = (1/4)*x+4/5 // - (1/4)*x+4/5
(5/4)*x-((1/4)*x)+9/2-(4/5) = 0
(5/4)*x+(-1/4)*x+9/2-4/5 = 0
x+37/10 = 0 // - 37/10
x = -37/10
x = -37/10
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