Question

What is a simplified algebraic expression for the difference of nine times a number and five more than two times the number ?

Answer 1

`7x-5`

Explanation:

If the number is `x`, then nine times the number is `9x`, five more than two times the number is `(2x+5)` and the difference is:

`9x-(2x+5) = 9x-2x-5 = (9-2)x-5 = 7x-5`