Expressions & Variables

Expressions/Variables

Don't you always get confused when you see a letter of the alphabet in a equation? I know I do, but now that I know how to do it, I think it's probably one of the easiest things. X+10=? And if x=3 then substitute the 3 for x. 3+10=13! That's how simple that one is,they also have some with negatives like x=-5+10=? For this one you would have to subtract. 10-5= 5 and a positive 5 because 10 is positive, and that is the bigger number.