Answer: Both of the equations
Step-by-step explanation: When looking at an equation in math, most times the letter(s) are the variables. Ex 2+2x-4 In this example x is the variable. As math gets more complex sometimes you may see problems like, 33x*4^10-7.5y. Both x and y are variables in that example. Remember to always see what the question is asking, sometimes you may need to solve for the variable or other times simplify. have a great day!
