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((1/3)/7)*x-((5/6)/9) = 0
((1/3)/7)*x-5/54 = 0
1/21*x-5/54 = 0 // + 5/54
1/21*x = 5/54 // : 1/21
x = 5/54/1/21
x = 35/18
x = 35/18
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