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(19/4)*X+7/2 = (9/2)*x // - (9/2)*x
(19/4)*X-((9/2)*x)+7/2 = 0
(19/4)*X+(-9/2)*x+7/2 = 0
19/4*X-9/2*x+7/2 = 0 // - 19/4*X+7/2
-9/2*x = -(19/4*X+7/2) // : -9/2
x = (-(19/4*X+7/2))/(-9/2)
x = 2/9*(19/4*X+7/2)
x = 2/9*(19/4*X+7/2)
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