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(7*x)/12-((2*y)/3) = 0
(7*x)/12+(-2/3)*y = 0
7/12*x-2/3*y = 0 // + -2/3*y
7/12*x = -(-2/3*y) // : 7/12
x = (-(-2/3*y))/7/12
x = 8/7*y
x = 8/7*y
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