Question

what is the algebraic expression for 19 decreased by a number

Answer 1

19-x

Answer 2

Where "x" is the number that 19 is being decreased by.

Answer 3

Your main number is 19. So that would be your first number in the problem. Decreased means subtraction. "X" is the variable it is decreased by (the number). So 19-X would be your correct answer. If you are still confused, let me know. I will gladly help guide you through whatever you're stuck on.

Answer 4

Thanks, and you're welcome! Do you need any more help?