Answer: It should say either in the equation itself, or in the directions
Step-by-step explanation:
If the instructions don't say which variable you're solving for, you can figure it out by looking at the equation
For example, we have this equation
[tex]9x+3=21[/tex]
In this equation, there is only one variable to solve for, and that variable is x
[tex]y=15-\sqrt{16}[/tex]
In this equation, there is only one variable to solve for, and that variable is y
However, if you're given an equation with more than one variable, most of the time, you have to solve for both!
