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2*x+8 = 4/7+4 // - 4/7+4
2*x-(4/7)-4+8 = 0
2*x-4/7-4+8 = 0
2*x+24/7 = 0 // - 24/7
2*x = -24/7 // : 2
x = -24/7/2
x = -12/7
x = -12/7
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