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(-1/5)*x+4/9 = -7*x-(898/45) // + -7*x-(898/45)
(-1/5)*x-(-7*x)+4/9+898/45 = 0
(-1/5)*x+7*x+4/9+898/45 = 0
34/5*x+102/5 = 0 // - 102/5
34/5*x = -102/5 // : 34/5
x = -102/5/34/5
x = -3
x = -3
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