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(8/9)*x+1/3 = (13/18)*x-(5/12) // - (13/18)*x-(5/12)
(8/9)*x-((13/18)*x)+1/3+5/12 = 0
(8/9)*x+(-13/18)*x+1/3+5/12 = 0
1/6*x+3/4 = 0 // - 3/4
1/6*x = -3/4 // : 1/6
x = -3/4/1/6
x = -9/2
x = -9/2
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