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y in (-oo:+oo)
2*y+7/4 = 5*y-(1/4) // - 5*y-(1/4)
2*y-(5*y)+7/4+1/4 = 0
2*y-5*y+7/4+1/4 = 0
2-3*y = 0 // - 2
-3*y = -2 // : -3
y = -2/(-3)
y = 2/3
y = 2/3
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