Solution: 9x=26.2-8.2

9x= 18

x=2

Test: 26.2-9×2=8.2

2、4(X+ 1.2)= 1 1.6

Solution: 4x+4.8= 1 1.6.

4X=6.8

x= 1.7

Test: 4× (1.7+1.2) =11.6.

3、4X+0.5×3=6.7

Solution: 4x=5.2

x= 1.3

4、5X-3.3=7.3

Solution: 5x= 10.6

x=2. 12

5、 1.7X-0.7X=20

Solution: x=20

6、X-4.5+5.5= 15

Solution: x= 14

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