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(4/9)*x-(8/5) = -4 // + 4
(4/9)*x-(8/5)+4 = 0
(4/9)*x-8/5+4 = 0
4/9*x+12/5 = 0 // - 12/5
4/9*x = -12/5 // : 4/9
x = -12/5/4/9
x = -27/5
x = -27/5
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