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(4/5)*x-(1/4)+14 = (9/10)*x // - (9/10)*x
(4/5)*x-((9/10)*x)-(1/4)+14 = 0
(4/5)*x+(-9/10)*x-1/4+14 = 0
55/4-1/10*x = 0 // - 55/4
-1/10*x = -55/4 // : -1/10
x = -55/4/(-1/10)
x = 275/2
x = 275/2
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