8858/8858/8858 时间:2025-11-26 09:27:00 浏览:849次 (1)1/5[4/3(1/4y-9/4)]+2=y 1/5[1/3y-3]+2=y 1/15y-3/5+2=y 7/5=14/15y y=2/3 (4)2-x/3+1/3=x 7/3=4/3x x=7/4 标签: