The answer process is as follows:

There are x children, and the equation according to the meaning of the question is as follows:

5x+20=7x-4

2x=24

X= 12 (piece)

Candy: 5x 12+20 = 80 (pieces)

A: There are 12 children, divided into 80 pieces of sugar.

Extended data

The solution of one-dimensional linear equation;

1, denominator: both sides of the equation are multiplied by the least common multiple of each denominator; ?

2. Remove the brackets: first remove the brackets, then remove the brackets, and finally remove the braces;

3. Move the term: move all the terms containing unknowns to one side of the equation, and all the other terms to the other side of the equation; ?

4. Merge similar terms: transform the equation into ax = b (a ≠ 0);

5. Coefficient division 1: divide the unknown coefficient a on both sides of the equation to get the solution of the equation.