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127/9 = x+(2/3)*x-(8/9) // - x+(2/3)*x-(8/9)
127/9-x-((2/3)*x)+8/9 = 0
(-2/3)*x-x+127/9+8/9 = 0
15-5/3*x = 0 // - 15
-5/3*x = -15 // : -5/3
x = -15/(-5/3)
x = 9
x = 9
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