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x in (-oo:+oo)
(2*x)/9-x = 53 // - 53
(2*x)/9-x-53 = 0
-7/9*x-53 = 0 // + 53
-7/9*x = 53 // : -7/9
x = 53/(-7/9)
x = -477/7
x = -477/7
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