x⼀12+y⼀9=55⼀60 x⼀4+y⼀8=1.5

2025-12-17 14:02:47
推荐回答(1个)
回答1:

x/12+y/9=55/60
x/4+y/8=1.5 =x/12+y/24=0.5
相减得y/9-y/24=55/60-0.5
5y/72=25/60
y=6
x=3