Answer one of these math questions! If you answer more than one, I will delete your post and you won't get points. You won't get points if someone else did it already either. (Worth 5 points! ! !)

(a) X+X=4, What is X?

(b) X=3(4+3), What is X?

(c) 7+8X=15, What is X?

(d) 3+X=2, What is X?