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x in (-oo:+oo)
(-7/9)*(x-3) = 14 // - 14
(-7/9)*(x-3)-14 = 0
-7/9*(x-3)-14 = 0
-7/9*(x-3)-14 = 0
-7/9*x-35/3 = 0
-7/9*x-35/3 = 0
-7/9*x-35/3 = 0 // + 35/3
-7/9*x = 35/3 // : -7/9
x = 35/3/(-7/9)
x = -15
x = -15
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