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2*x+x+2/3-(2/4) = 15/2 // - 15/2
2*x+x+2/3-(2/4)-(15/2) = 0
2*x+x+2/3-1/2-15/2 = 0
3*x-22/3 = 0 // + 22/3
3*x = 22/3 // : 3
x = 22/3/3
x = 22/9
x = 22/9
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