Question

I am thinking of a positive integer that is 3 less than 3 times another number. The product of my number and the other number is 90.

a. Write an equation to represent this situation.
b. What is my number?

Answer 1

your numnber is 15

Explanation:

3x-3=n

nx=90

nx=90

(3x-3)x=90

3x^2-3x=90

x=6

3x-3=n

3(6)-3=n

18-3=n

15=n