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第18页

信息发布者：

B

A

C

B

A

解: 54x =

162

54x÷54 =

162÷54

x =

3

解: 3x =

0.9

3x÷3 =

0.9÷3

x =

0.3

解: 4.2x+3.9 =

16.5

4.2x+3.9-3.9 =

16.5-3.9

4.2x =

12.6

4.2x÷4.2 =

12.6÷4.2

x =

3

解: 5x-16 =

48

5x-16+16 =

48+16

5x =

64

5x÷5 =

64÷5

x =

12.8

解: 5x+13.5 =

25

5x+13.5-13.5 =

25-13.5

5x =

11.5

5x÷5 =

11.5÷5

x =

2.3

解: 4.8x =

14.4

4.8x÷4.8 =

14.4÷4.8

x =

3

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