Question

解方程 X-7/12=5/9 7/10-x=2/3 x-4/7=1/5 12/11-x=1/7 2x+5/8=5/8 x+7/18=5/6

Answer 1

X-7/12=5/9
解：x-7/12+7/12=5/9+7/12
x=41/36

7/10-x=2/3
解：7/10-x+x=2/3+x
7/10-2/3=2/3+x-2/3
1/30=x
x=1/30

x-4/7=1/5
解：x-4/7+4/7=1/5+4/7
x=27/35

12/11-x=1/7
解：12/11-x+x=1/7+x
12/11=1/7+x
12/11-1/7=1/7+x-1/7
73/77=x
x=73/77

2x+5/8=5/8
解：2x+5/8-5/8=5/8-5/8
2x=0
2x÷2=0÷2
x=0

x+7/18=5/6
解：x+7/18-7/18=5/6-7/18
x=4/9

Answer 2

X-7/12=5/9
X=5/9 +7/12
x=41/36

7/10-x=2/3
x=7/10-2/3
x=1/30

x-4/7=1/5
x=1/5+4/7
x=27/35

12/11-x=1/7
x=12/11-1/77
x=73/77

2x+5/8=5/8
2x=5/8-5/8
2x=0
x=0

x+7/18=5/6
x=5/6-7/18
x=8/18
x=4/9

Answer 3

41/36、1/30、27/35、75/77、0、4/9