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y in (-oo:+oo)
y/5+1/4 = 4*y // - 4*y
y/5-(4*y)+1/4 = 0
y/5-4*y+1/4 = 0
1/4-19/5*y = 0 // - 1/4
-19/5*y = -1/4 // : -19/5
y = -1/4/(-19/5)
y = 5/76
y = 5/76
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