x - 3. Difference between 3 and x. 3 - x. Twice a number. 2x. Ten percent of x. 0.10x ... 10x. Quotient of x and 3 x/3. Quotient of 3 and x. 3/x. Five is three more than a ... + 5. The sum of 5x and 10 is equal to the product of x and 15. 5x + 10 = 15x.
