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(2/3)*x+4/3 = -2/3 // + -2/3
(2/3)*x+4/3-(-2/3) = 0
(2/3)*x+4/3+2/3 = 0
2/3*x+2 = 0 // - 2
2/3*x = -2 // : 2/3
x = -2/2/3
x = -3
x = -3
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