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7*x-(8/9) = -229/45 // + -229/45
7*x-(8/9)-(-229/45) = 0
7*x-8/9+229/45 = 0
7*x+21/5 = 0 // - 21/5
7*x = -21/5 // : 7
x = -21/5/7
x = -3/5
x = -3/5
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