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(1/2)*x+3 = 8*x+19/8 // - 8*x+19/8
(1/2)*x-(8*x)-(19/8)+3 = 0
(1/2)*x-8*x-19/8+3 = 0
5/8-15/2*x = 0 // - 5/8
-15/2*x = -5/8 // : -15/2
x = -5/8/(-15/2)
x = 1/12
x = 1/12
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