ANSWER and EXPLANATION
We have the equation:
4m = 52
We want to put this in a real life equation.
Let us do that:
Alex wants to save up money for a new shirt. The shirt costs $52.
He wants to save $4 every week.
How many weeks would it take to be able to buy the shirt?
To solve it:
He saves $4 every week, so after m weeks, he would have save:
4 * m = 4m
That must be equal to $52 for him to buy the shirt, so:
4m = 52
Divide both sides by 4:
m = 52 / 4
m = 13 weeks