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56-(3*x) = y-((4*x)/3) // - y-((4*x)/3)
(4*x)/3-(3*x)-y+56 = 0
(4*x)/3-3*x-y+56 = 0
56-5/3*x-y = 0 // - 56-y
-5/3*x = -(56-y) // : -5/3
x = (-(56-y))/(-5/3)
x = -3/5*(y-56)
x = -3/5*(y-56)
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