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y in (-oo:+oo)
-14 = (-2/3)*y // - (-2/3)*y
-((-2/3)*y)-14 = 0
(2/3)*y-14 = 0
2/3*y-14 = 0 // + 14
2/3*y = 14 // : 2/3
y = 14/2/3
y = 21
y = 21
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