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(1/3)*y = (7/3)*x+5/3 // - (7/3)*x+5/3
(1/3)*y-((7/3)*x)-(5/3) = 0
(-7/3)*x+(1/3)*y-5/3 = 0
1/3*y-7/3*x-5/3 = 0 // - 1/3*y-5/3
-7/3*x = -(1/3*y-5/3) // : -7/3
x = (-(1/3*y-5/3))/(-7/3)
x = -3/7*(5/3-(1/3*y))
x = -3/7*(5/3-(1/3*y))
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