Exercise 45 Page 9

Let's think about the x-term on the left-hand side in both equations. In Equation 1, we have x. In Equation 2, we have 4x. This means that we can multiply the x-term in Equation 1 by 4 to make it equal to the x-term in Equation 2. x * 4 = 4x Let's check to see if multiplying all of Equation 1 by 4 makes it equivalent to Equation 2.

Multiplying Equation 1 by 4 did, in fact, make it equivalent to Equation 2. Therefore, we used the Multiplication Property of Equality.