解方程.40%X-1⼀4=7⼀12

2025-03-20 16:05:59
推荐回答(2个)
回答1:

40%x=7/12+1/4
40%x=7/12+3/12=10/12=5/6
x=5/6÷40%=5/6÷4/10=5/6×10/4=25/12

回答2:

2/5x-1/4=7/12