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x-x-(5/7)+8/9 = 8*x-(5/12) // - 8*x-(5/12)
x-x-(8*x)-(5/7)+8/9+5/12 = 0
x-x-8*x-5/7+8/9+5/12 = 0
149/252-8*x = 0 // - 149/252
-8*x = -149/252 // : -8
x = -149/252/(-8)
x = 149/2016
x = 149/2016
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