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59/18 = 7*x-2*x-(8/9) // - 7*x-2*x-(8/9)
59/18-(-2*x)-(7*x)+8/9 = 0
2*x-7*x+59/18+8/9 = 0
25/6-5*x = 0 // - 25/6
-5*x = -25/6 // : -5
x = -25/6/(-5)
x = 5/6
x = 5/6
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