Translate the sum of twice a number and 15 is 9

Answer 1

Hello Donovan,

The appropriate expression for the above problem is as follows:

2x + 15 = 9

Please note in your problem you are told the "sum of twice a number" which is 2 times any variable you select, and 15 which means to add. The word "is" means is "equal to."

2x + 15 = 9

-15 = -15

2x = -6

x = -3

We always want to check our work. Therefore, we substitute the -3 as the value for x in the above equation.

2(-3) + 15 = 9

-6 +15 = 9

9 = 9

The solution checks and is therefore valid. I hope this assists and that you have a great Thanksgiving. If you have further questions about the problem or solution, want to leave feedback, or have further questions, please click add comment and do so under this solution. If you need one on one tutoring, please feel free to reach out to me or any tutor. Best!