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7/3-((2/3)*(x-10)) = (3/5)*(x-4) // - (3/5)*(x-4)
7/3-((2/3)*(x-10))-((3/5)*(x-4)) = 0
(-2/3)*(x-10)+(-3/5)*(x-4)+7/3 = 0
7/3-2/3*(x-10)-3/5*(x-4) = 0
(-2/3*3*(x-10))/3+(-3/5*3*(x-4))/3+7/3 = 0
7-2/3*3*(x-10)-3/5*3*(x-4) = 0
7-19/5*x+136/5 = 0
171/5-19/5*x = 0
(171/5-19/5*x)/3 = 0
(171/5-19/5*x)/3 = 0 // * 3
171/5-19/5*x = 0
171/5-19/5*x = 0 // - 171/5
-19/5*x = -171/5 // : -19/5
x = -171/5/(-19/5)
x = 9
x = 9
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