The Sum of three times a number and 18 is -39. Find the number. I was always confused with these problems and never understood them. Any help would be much appreciated!! Thank you!

The phrase a number means an arbitrary variable, let's call it x. Three times a number: 3x And 18 means we add 18 3x + 18 The word is means equal to, so we set 3x + 18 equal to -39 3x + 18 = -39 This is your algebraic expression. If you want to solve for x, plug it into the search engine and you get x = -19