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(5/4)*x-(1/2) = (-7/2)*x // - (-7/2)*x
(5/4)*x-((-7/2)*x)-(1/2) = 0
(5/4)*x+(7/2)*x-1/2 = 0
19/4*x-1/2 = 0 // + 1/2
19/4*x = 1/2 // : 19/4
x = 1/2/19/4
x = 2/19
x = 2/19
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