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y-9 = (5/7)*x-(7*(x-2))-5 // - (5/7)*x-(7*(x-2))-5
7*(x-2)-((5/7)*x)+y-9+5 = 0
7*(x-2)+(-5/7)*x+y-9+5 = 0
7*(x-2)+(-5*x)/7+y-9+5 = 0
(7^2*(x-2))/7+(-5*x)/7+(7*y)/7+(-9*7)/7+(5*7)/7 = 0
7^2*(x-2)-5*x+7*y-9*7+5*7 = 0
44*x+7*y-98-63+35 = 0
44*x+7*y-161+35 = 0
44*x+7*y-126 = 0
(44*x+7*y-126)/7 = 0
(44*x+7*y-126)/7 = 0 // * 7
44*x+7*y-126 = 0
44*x+7*y-126 = 0 // - 7*y-126
44*x = -(7*y-126) // : 44
x = (-(7*y-126))/44
x = (126-(7*y))/44
x = (126-(7*y))/44
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