How do you solve this system of equations: #7p + 8q = 11 and 3p + 4q = 3#?
We can use elimination to solve this.
Let’s try to eliminate
Multiply both sides of the bottom equation by
To do that, we need to add both equations together:
Knowing that, we can plug the value of
Now that we have the values of both variables, we can plug them into one of the equations to check our work:
So it’s right.