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2*x+x/6-(7/12)-3 = 11/15 // - 11/15
2*x+x/6-(7/12)-(11/15)-3 = 0
2*x+x/6-7/12-11/15-3 = 0
13/6*x-259/60 = 0 // + 259/60
13/6*x = 259/60 // : 13/6
x = 259/60/13/6
x = 259/130
x = 259/130
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