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(2*x+8)/3-4 = -2 // + 2
(2*x+8)/3-4+2 = 0
(2*x+8)/3+(-4*3)/3+(2*3)/3 = 0
2*x-4*3+2*3+8 = 0
2*x-4+6 = 0
2*x+2 = 0
(2*x+2)/3 = 0
(2*x+2)/3 = 0 // * 3
2*x+2 = 0
2*x+2 = 0 // - 2
2*x = -2 // : 2
x = -2/2
x = -1
x = -1
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