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(1/8)*(5*y+65) = (1/4)*(2*y+20) // - (1/4)*(2*y+20)
(1/8)*(5*y+65)-((1/4)*(2*y+20)) = 0
(1/8)*(5*y+65)+(-1/4)*(2*y+20) = 0
1/8*(5*y+65)-1/4*(2*y+20) = 0
1/8*(5*y+65)-1/4*(2*y+20) = 0
1/8*y+25/8 = 0
1/8*y+25/8 = 0
1/8*y+25/8 = 0 // - 25/8
1/8*y = -25/8 // : 1/8
y = -25/8/1/8
y = -25
y = -25
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