(3y-1/4)=1-(3-y)/8同时乘8,得：8(3y-1/4)=8-(3-y)24y-2=8-3+y24y-y=8-3+223y=7y=7/23题目对吗?如果是(3y-1)/4=1-(3-y)/8同时乘8,得：2(3y-1)=8-(3-y)6y-2=8-3+y6y-y=8-3+25y=7y=1.4