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(y+8)/4+(y+1)/8 = 4 // - 4
(y+8)/4+(y+1)/8-4 = 0
(8*(y+8))/(4*8)+(4*(y+1))/(4*8)+(-4*4*8)/(4*8) = 0
8*(y+8)+4*(y+1)-4*4*8 = 0
12*y-128+68 = 0
12*y-60 = 0
(12*y-60)/(4*8) = 0
(12*y-60)/(4*8) = 0 // * 4*8
12*y-60 = 0
12*y-60 = 0 // + 60
12*y = 60 // : 12
y = 60/12
y = 5
y = 5
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