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y in (-oo:+oo)
14 = (3/4)*(9*y-15) // - (3/4)*(9*y-15)
14-((3/4)*(9*y-15)) = 0
(-3/4)*(9*y-15)+14 = 0
14-3/4*(9*y-15) = 0
14-3/4*(9*y-15) = 0
101/4-27/4*y = 0
101/4-27/4*y = 0
101/4-27/4*y = 0 // - 101/4
-27/4*y = -101/4 // : -27/4
y = -101/4/(-27/4)
y = 101/27
y = 101/27
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