Beginning Algebra

Question

Triple the difference of a number and 5 is the same as six less than double the same number. Find the number.

Answer 1

Let the number be x

Triple the difference of x and 5 is 3(x-5)

Six less than double x = 2x-6

These are equal so you have 3(x-5) = 2x-6

3x-15 = 2x-6

x = 9