what I remembered most about math last semester

    There were so many things I learned in algebra that I didn't know about. There is one thing I remembered most and it was solving systems of equations. There are two ways to solve and it is substitution and elimination. Elimination is where you eliminate a variable that is the same for example, x=2 x=2, and you eliminate it. Substitution is where you substitute the variable with the expression. For example, if it is y=2x+7 and y=3x+9 then you substitute by putting 2x+7=3x+9.

    The thing that helped me learn this was remembering if the y's are the same, then it is a substitution problem. If no variable is the same, then it is an elimination problem. This really helped me because at first I didn't know how to do this. I got help from Mr.Erickson and it really helped me.