Five times the sum of a number and 3 is the same as 3 multiplied by 1 less than twice the number. what is the number

5 (x+3) = 3 (2x-1)

**distribute

5x+15=6x-3

-5x - 5x

**get like term together

15=x-3

+3 + 3

**get x alone on one side of the equation

18=x

check your work by replacing the variable x with 18

5 (18+3) = 3 (2·18 - 1)

5·21=3·35

105=105 yes!

So, the number you are looking for is 18