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x in (-oo:+oo)
(-2*x)/9 = 10/3 // - 10/3
(-2*x)/9-(10/3) = 0
(-2*x)/9-10/3 = 0
-2/9*x-10/3 = 0 // + 10/3
-2/9*x = 10/3 // : -2/9
x = 10/3/(-2/9)
x = -15
x = -15
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