Question

简单的数学题 求解

一、解方程。
1/7+X=2/3 x-1/6=3/8

二、计算。
1/5+1/7 5/6-3/4 5/13+7/26

1+7/8 15/16 -3/4 7/8-3/4

Answer 1

1/7+X=2/3
x=2/3-1/7
x=14/21 -3/21
x=11/21

x-1/6=3/8
x=1/6+3/8
x=4/24+9/24
x=13/24

1/5+1/7
=7/35+5/35
=12/35

5/6-3/4
=10/12-9/12
=1/12

5/13+7/26
=10/26+7/26
=17/26

1+7/8
=8/8+7/8
=15/8

15/16 -3/4
=15/16-12/16
=3/16

7/8-3/4
=7/8-6/8
=1/8

Answer 2

1、x=2/3-1/7=11/21；
x=3/8+1/6=13/24

2、1/5+1/7=12/35

5/6-3/4=1/12

5/13+7/26=17/26

1+7/8=15/8

15/16 -3/4=3/16

7/8-3/4=1/8