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What does the first volume of seventh grade mathematics of People's Education Press mean by "Solving a linear equation with one variable: converting the coefficient into 1"?
The coefficient is 1, that is, all unknown coefficients are changed to 1. For example, 2x- 1=3, then 2x = 1+3, 2x = 4, x = 4/2 and x = 2.
In the last step, we mainly look at the coefficient before X. If it is not 1, we must divide both sides by the coefficient before X, and then change the unknown coefficient into 1.