We can make a simple equation for this problem. We know that when the product of 6 and a number is increased by 8 the result is 20. We can call this number “x”.
(6 * x) + 8 = 20
Subtract 8 from both sides.
6 * x = 12
Divide 12 by 2, to get x.
x = 2
Our number is 2.