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y in (-oo:+oo)
16 = (4*y-5)/2+(9*y-2)/8 // - (4*y-5)/2+(9*y-2)/8
16-((4*y-5)/2)-((9*y-2)/8) = 0
(-1*(4*y-5))/2+(-1*(9*y-2))/8+16 = 0
(-1*8*(4*y-5))/(2*8)+(-1*2*(9*y-2))/(2*8)+(2*8*16)/(2*8) = 0
2*8*16-1*8*(4*y-5)-1*2*(9*y-2) = 0
44-50*y+256 = 0
300-50*y = 0
(300-50*y)/(2*8) = 0
(300-50*y)/(2*8) = 0 // * 2*8
300-50*y = 0
300-50*y = 0 // - 300
-50*y = -300 // : -50
y = -300/(-50)
y = 6
y = 6
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