1-(10/21-3/14) 3/8+(11/12-7/20) 2/3-7/12+4/5 x-3/8-1/8=11/18 2/3-x-1/4=1/3 2x-6/7=1/77/9-x+5/6=1又 5/18 x+5/12=1/2+5/9 要过成
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 09:27:39
![1-(10/21-3/14) 3/8+(11/12-7/20) 2/3-7/12+4/5 x-3/8-1/8=11/18 2/3-x-1/4=1/3 2x-6/7=1/77/9-x+5/6=1又 5/18 x+5/12=1/2+5/9 要过成](/uploads/image/z/1634894-62-4.jpg?t=1-%2810%2F21-3%2F14%29+3%2F8%2B%2811%2F12-7%2F20%29+2%2F3-7%2F12%2B4%2F5+x-3%2F8-1%2F8%3D11%2F18+2%2F3-x-1%2F4%3D1%2F3+2x-6%2F7%3D1%2F77%2F9-x%2B5%2F6%3D1%E5%8F%88+5%2F18+x%2B5%2F12%3D1%2F2%2B5%2F9+%E8%A6%81%E8%BF%87%E6%88%90)
1-(10/21-3/14) 3/8+(11/12-7/20) 2/3-7/12+4/5 x-3/8-1/8=11/18 2/3-x-1/4=1/3 2x-6/7=1/77/9-x+5/6=1又 5/18 x+5/12=1/2+5/9 要过成
1-(10/21-3/14) 3/8+(11/12-7/20) 2/3-7/12+4/5 x-3/8-1/8=11/18 2/3-x-1/4=1/3 2x-6/7=1/7
7/9-x+5/6=1又 5/18 x+5/12=1/2+5/9 要过成
1-(10/21-3/14) 3/8+(11/12-7/20) 2/3-7/12+4/5 x-3/8-1/8=11/18 2/3-x-1/4=1/3 2x-6/7=1/77/9-x+5/6=1又 5/18 x+5/12=1/2+5/9 要过成
1-(10/21-3/14) =1-(20/42-9/42)=1-11/42=31/42
3/8+(11/12-7/20)=3/8+55/60-21/60=3/8+34/60=3/8+17/30=45/120+68/120=113/120
2/3-7/12+4/5 =8/12-7/12+4/5=1/12+4/5=5/60+48/60=53/60
x-3/8-1/8=11/18
x=11/18+1/2=11/18+9/18=20/18=10/9
2/3-x-1/4=1/3
x=2/3-1/4-1/3=1/3-1/4=4/12-3/12=1/12
2x-6/7=1/7
2x=1/7+6/7=1
x=1/2
7/9-x+5/6=1又 5/18
x=7/9+5/6-23/18=14/18+15/18-23/18=6/18=1/3
x+5/12=1/2+5/9
x=1/2+5/9-5/12=6/12-5/12+5/9=1/12+5/9=3/36+20/36=23/36