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(2/3)*(x-5) = -4*x // + -4*x
(2/3)*(x-5)-(-4*x) = 0
(2/3)*(x-5)+4*x = 0
2/3*(x-5)+4*x = 0
2/3*(x-5)+4*x = 0
14/3*x-10/3 = 0
14/3*x-10/3 = 0
14/3*x-10/3 = 0 // + 10/3
14/3*x = 10/3 // : 14/3
x = 10/3/14/3
x = 5/7
x = 5/7
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