Question

5-2分之7X=2分之3 7+0.4X=101 6分之5-1=12分之13 9X+X=25.6 22.5-0.4X=12.5 3分之2X+4分之1X=33

X-3分之1X=6分之1 0.75×3-3X=0.15 急啊！！快来人啊！！

Answer 1

5-2分之7X=2分之3
3.5x=3.5
x=1

7+0.4X=101
0.4x=94
x=235

6分之5x-1=12分之13
5/6x=25/12
x=2.5

9X+X=25.6
10x=25.6
x=2.56

22.5-0.4X=12.5
0.4x=10
x=25

3分之2X+4分之1X=33
11/12x=33
x=36

X-3分之1X=6分之1
2/3x=1/6
x=1/4

0.75×3-3X=0.15
2.25-3x=0.15
3x=2.1
x=0.7