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(3*(y-5))/4 = 8*x+19 // - 8*x+19
(3*(y-5))/4-(8*x)-19 = 0
(3*(y-5))/4-8*x-19 = 0
(3*(y-5))/4+(-8*4*x)/4+(-19*4)/4 = 0
3*(y-5)-8*4*x-19*4 = 0
3*y-32*x-76-15 = 0
3*y-32*x-91 = 0
(3*y-32*x-91)/4 = 0
(3*y-32*x-91)/4 = 0 // * 4
3*y-32*x-91 = 0
3*y-32*x-91 = 0 // - 3*y-91
-32*x = -(3*y-91) // : -32
x = (-(3*y-91))/(-32)
x = (91-(3*y))/(-32)
x = (91-(3*y))/(-32)
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