solve the system of equations algebraically. show all your steps. y=x^2+2x y=3x+20

Can someone show me step by step on how to get the answer it's, there are answers like this that is going to be on my math test and I don'tget it.

3 answers

Sorry for my spelling, rushed it.
Since both = y, they must be equal to each other.

x^2+2x = 3x+20

Solve for x, then y.
By the way, this math not science.