help please, this is supposed to be done with a calculator but i don’t have one

Answer:
x = {7, -1}
Step-by-step explanation:
assuming that you are to find the zeros of the equation you dont need a calculator to do this
you can set both sides to zero
(x - 7) = 0
(x + 1) = 0
and then solve for the zeros
x = {7, -1}
that is your answer