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4*x+7*x+8/9 = -257/45 // + -257/45
4*x+7*x+8/9-(-257/45) = 0
4*x+7*x+8/9+257/45 = 0
11*x+33/5 = 0 // - 33/5
11*x = -33/5 // : 11
x = -33/5/11
x = -3/5
x = -3/5
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