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x in (-oo:+oo)
(9/10)*x-(7/9) = 14 // - 14
(9/10)*x-(7/9)-14 = 0
(9/10)*x-7/9-14 = 0
9/10*x-133/9 = 0 // + 133/9
9/10*x = 133/9 // : 9/10
x = 133/9/9/10
x = 1330/81
x = 1330/81
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