Here’s a quick math problem to think about:
The sum of two numbers is 10. The difference between the two numbers is 4. What are the two numbers?
Problems like this can be challenging because you have to use multiple pieces of information to find the answer.
There are many combinations of numbers that add to 10, such as 0 and 10, 2 and 8, 3 and 7, 12 and -2.
But only one of those combinations has a difference of 4.
Some people may prefer to solve this problem by trial and error. It can also be represented by a system of two equations, using A and B to represent the two numbers:
A + B = 10
A - B = 4
So, what do you think A and B are? (And if you figured 7 and 3, then you are correct!)