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x in (-oo:+oo)
(2/3)*(4/3+7) = (3/2)*x // - (3/2)*x
(2/3)*(4/3+7)-((3/2)*x) = 0
(-3/2)*x+(2/3)*(4/3+7) = 0
50/9-3/2*x = 0 // - 50/9
-3/2*x = -50/9 // : -3/2
x = -50/9/(-3/2)
x = 100/27
x = 100/27
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