40%x-1⼀4=7⼀12

2024-11-23 17:57:47
推荐回答(3个)
回答1:

40%x-1/4=7/12
40/100分数化简就是2/5
原式=2/5x-1/4=7/12
2/5x=7/12+1/4
后两项通分,分母为12,7/12+3/12=10/12
2/5x=10/12
两边乘以5/2, 最后x=50/24

回答2:

40%x-1/4=7/12
2/5x=7/12+1/4
2/5x=5/6
x=25/12

回答3:

40%x-1/4=7/12
2/5x-1/4=7/12
2/5x=5/6
x=25/12