algebraic expression

Question

How to write the phrase as an algebraic expression:

The sum of 4 times a number and -5, added to 9 times the number

Answer 1

X=number, The Sum of 4 times a number and -5    is    4X-5
Added to 9 times the number    is    + 9x      Expression is     4X-5+9X = 13X-5