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(-4/5)*x-(8/9) = 1/9-x // - 1/9-x
(-4/5)*x+x-(8/9)-(1/9) = 0
(-4/5)*x+x-8/9-1/9 = 0
1/5*x-1 = 0 // + 1
1/5*x = 1 // : 1/5
x = 1/1/5
x = 5
x = 5
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