Question

2/9X12= 2/3除以3/2= 5/51X17= 3/4X5/6除以5/6X3/4= 解方程

2/9X12=
2/3除以3/2=
5/51X17=
3/4X5/6除以5/6X3/4=
解方程
1-2/9x=3/5
9/16除以x=3/8
用自己喜欢的方法计算
8/13除以7+1/7X6/13
4/25X23+4/25X67
5除以[(2/3+1/5)X1/13]
求解答！！！！

Answer 1

Answer 2

8/3

4/9
5/3
5/8/（5/8）=1
x=2/5/（2/9）=9/5
x=9/16/（3/8）=3
8/91+8/13/（6/91）=8/51+28/3=2572/297
4*（23/25+67/25）=4*90/25=72/5
5/（13/15*1/13)=5/(1/15)=75