Question

What inverse operation should be used to isolate the variable in the equation p − 20 = 50?

Answer 1

To isolate p in this equation you have to add 20 to both sides, since addition is the inverse operation of subtraction and vise versa. Adding 20 to both sides will cancel it out of the left side since -20 + 20 = 0.

Hope this helped!

Answer 2

addition since inverse means opposite