The solution of the mathematical equation in the second volume of the fifth grade is as follows:

Example: 98-2x=60 can be regarded as 98 minus how much is equal to 60 (or 2x can be regarded as an inclusive term), and 98-38=60 can be derived from numbers, then the following formula can be written as 2x=38, from which x equals 38 twice, that is, x equals 19, and the answer can be worked out.

Solution: 98-2x=60

2x=98-60

2x=38

x= 19