Big Ideas Math Integrated I, 2016
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Big Ideas Math Integrated I, 2016 View details
4. Solving Absolute Value Equations
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Exercise 63 Page 34

What do you need to do to get from Equation 1 to Equation 2?

Division Property of Equality

Practice makes perfect

Let's take a look at the two equations. We are asked to find the Property of Equality that makes them equivalent.

When comparing Equation 1 and Equation 2, we see that each of the sides became 4 times smaller. For that to happen, both sides of Equation 1 must have been divided by 4. 4y=28 ⇔ 4y ÷ 4=28 ÷ 4 Let's simplify the resulting equation by calculating the quotients on both sides.
4y Ă· 4 = 28Ă· 4
4y/4=28/4
y=7
We got the second equation. Since we were dividing both sides of an inequality, this property is called the Division Property of Equality.