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-3/7 = -((2/3)*x)-5/3 // + -((2/3)*x)-5/3
(2/3)*x-3/7-(-5/3) = 0
(2/3)*x-3/7+5/3 = 0
2/3*x+26/21 = 0 // - 26/21
2/3*x = -26/21 // : 2/3
x = -26/21/2/3
x = -13/7
x = -13/7
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