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