Mr. Smith has 4 daughters, each daughter has 4 brothers So, the total number of children Mr. Smith has 8 children.
What is a linear equation?
A linear equation is an equation that has the variable of the highest power of 1. The standard form of a linear equation is of the form Ax + B = 0.
It is given that Mr. Smith had 4 daughters.
Since we also know that for every daughter he had a son.
So, We can represent that as the total number of children A + B
where A is the number of daughters and B is the number of sons
= 4 + 1(4)
= 4 + 4
= 8
The first 4 are for the daughters and the 1(4) is 1 brother for each daughter.
Thus, there are 4 daughters and 4 sons, or a total of 8 children.
Learn more about linear equations;
https://brainly.com/question/27056029
