2/7+1/2÷4/5+3/8 4-(5/4-2/3*5/14) 1/2÷5/8*3/5+1/25 15/16÷(5/12÷5/8+3/8)8/3÷(4/5-8/15) 5/9*4/15-5/9*1/15 (5/7-1/2)*7/3-1/2 3.28*3/4+1/72*3/4解方程x-1/8=3/4÷3/8 2x-1/2=6/5 4又1/5+3x=8又1/2
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 04:07:02
![2/7+1/2÷4/5+3/8 4-(5/4-2/3*5/14) 1/2÷5/8*3/5+1/25 15/16÷(5/12÷5/8+3/8)8/3÷(4/5-8/15) 5/9*4/15-5/9*1/15 (5/7-1/2)*7/3-1/2 3.28*3/4+1/72*3/4解方程x-1/8=3/4÷3/8 2x-1/2=6/5 4又1/5+3x=8又1/2](/uploads/image/z/4340572-52-2.jpg?t=2%2F7%2B1%2F2%C3%B74%2F5%2B3%2F8+4-%EF%BC%885%2F4-2%2F3%2A5%2F14%EF%BC%89+1%2F2%C3%B75%2F8%2A3%2F5%2B1%2F25+15%2F16%C3%B7%EF%BC%885%2F12%C3%B75%2F8%2B3%2F8%EF%BC%898%2F3%C3%B7%EF%BC%884%2F5-8%2F15%EF%BC%89+5%2F9%2A4%2F15-5%2F9%2A1%2F15+%EF%BC%885%2F7-1%2F2%EF%BC%89%2A7%2F3-1%2F2+3.28%2A3%2F4%2B1%2F72%2A3%2F4%E8%A7%A3%E6%96%B9%E7%A8%8Bx-1%2F8%3D3%2F4%C3%B73%2F8+2x-1%2F2%3D6%2F5+4%E5%8F%881%2F5%2B3x%3D8%E5%8F%881%2F2)
2/7+1/2÷4/5+3/8 4-(5/4-2/3*5/14) 1/2÷5/8*3/5+1/25 15/16÷(5/12÷5/8+3/8)8/3÷(4/5-8/15) 5/9*4/15-5/9*1/15 (5/7-1/2)*7/3-1/2 3.28*3/4+1/72*3/4解方程x-1/8=3/4÷3/8 2x-1/2=6/5 4又1/5+3x=8又1/2
2/7+1/2÷4/5+3/8 4-(5/4-2/3*5/14) 1/2÷5/8*3/5+1/25 15/16÷(5/12÷5/8+3/8)
8/3÷(4/5-8/15) 5/9*4/15-5/9*1/15 (5/7-1/2)*7/3-1/2 3.28*3/4+1/72*3/4
解方程
x-1/8=3/4÷3/8 2x-1/2=6/5 4又1/5+3x=8又1/2
2/7+1/2÷4/5+3/8 4-(5/4-2/3*5/14) 1/2÷5/8*3/5+1/25 15/16÷(5/12÷5/8+3/8)8/3÷(4/5-8/15) 5/9*4/15-5/9*1/15 (5/7-1/2)*7/3-1/2 3.28*3/4+1/72*3/4解方程x-1/8=3/4÷3/8 2x-1/2=6/5 4又1/5+3x=8又1/2
简便计算和解方程,
2/7+1/2÷4/5+3/8
=2/7+(5/8+3/8)
=2/7+1
=1又2/7
4-(5/4-2/3*5/14)
=4-(5/4-5/21)
=4-1又1/84
=2又83/84
1/2÷5/8*3/5+1/25
=4/5*3/5+1/25
=12/25+1/25
=13/25
15/16÷(5/12÷5/8+3/8)
=15/16÷(2/3+3/8)
=15/16÷25/24
=9/10
8/3÷(4/5-8/15)
=8/3÷4/15
=10
5/9*4/15-5/9*1/15
=5/9*(4/15+1/15)
=5/9*1/3
=5/27
(5/7-1/2)*7/3-1/2
=3/14*7/3-1/2
=1/2-1/2
=0
3.28*3/4+1.72*3/4
=(3.28+1.72)*3/4
=5*3/4
=15/4
=3.75
解方程x-1/8=3/4÷3/8
x-1/8=2
x=2又1/8
2x-1/2=6/5
2x=6/5-1/2
2x=7/10
x=7/20
4又1/5+3x=8又1/2
3x=4.3
x=43/30