If the sum of a number and nine is tripled the results is seven less than twice the number. find the number

Here is the equation you need:

3(x + 9) = 2x - 7

You finish.

Well in order to lose a pound you would have to burn 1,500 calories. the more calories you burn the more weight you lose. in order to lose 2 pounds you would have to run 4 hours and 28 minutes.