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(4*y+2)/2+y+8 = 30 // - 30
(4*y+2)/2+y-30+8 = 0
(4*y+2)/2+(2*y)/2+(-30*2)/2+(2*8)/2 = 0
4*y+2*y-30*2+2*8+2 = 0
6*y-60+2+16 = 0
6*y-58+16 = 0
6*y-42 = 0
(6*y-42)/2 = 0
(6*y-42)/2 = 0 // * 2
6*y-42 = 0
6*y-42 = 0 // + 42
6*y = 42 // : 6
y = 42/6
y = 7
y = 7
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