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(1/2)*(y+5)+(1/4)*(7*y-11)-8+3 = 0
1/2*(y+5)+1/4*(7*y-11)-8+3 = 0
1/2*(y+5)+1/4*(7*y-11)-8+3 = 0
9/4*y-8-1/4+3 = 0
9/4*y-33/4+3 = 0
9/4*y-21/4 = 0
9/4*y-21/4 = 0
9/4*y-21/4 = 0 // + 21/4
9/4*y = 21/4 // : 9/4
y = 21/4/9/4
y = 7/3
y = 7/3
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