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X in (-oo:+oo)
(-4/9)*X = 8/3 // - 8/3
(-4/9)*X-(8/3) = 0
(-4/9)*X-8/3 = 0
-4/9*X-8/3 = 0 // + 8/3
-4/9*X = 8/3 // : -4/9
X = 8/3/(-4/9)
X = -6
X = -6
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