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9*x-(8*x)-(2/7) = 11/14 // - 11/14

9*x-(8*x)-(2/7)-(11/14) = 0

9*x-8*x-2/7-11/14 = 0

x-15/14 = 0 // + 15/14

x = 15/14

x = 15/14

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