Question

5/6减去x等于7/9解方程

Answer 1

解方程:
5/6-x=7/9
-x=7/9-5/6
-x=-1/18
x=1/18

Answer 2

5/6-x=7/9
x=5/6-7/9
x=15/18-14/18
x=1/18

追问

7/4加x等于四

追答

7/4+x=4
x=4-7/4
x=9/4

追问

1减去7/14减去3/14

简便方法计算

追答

1-7/14-3/14
=1-(7/14+3/14)
=1-10/14
=1-5/7
=2/7

追问

3/5减7/11加2/5减4/11

用简便方法计算

追答

3/5-7/11+2/5-4/11
=3/5+2/5-(7/11+4/11)
=1-1
=0

追问

10/9减去(7/9减去1/4)

追答

10/9-(7/9-1/4)
=10/9-7/9+1/4
=1/3+1/4
=4/12+3/12
=7/12

Answer 3

等号两边都乘上6*9 54

Answer 4

5/6-x=7/9