Big Ideas Math Integrated I, 2016
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Big Ideas Math Integrated I, 2016 View details
3. Postulates and Diagrams
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Exercise 36 Page 464

Use the Division Property of Equality to eliminate the multiplication.

Solution: x=7
Property: Division Property of Equality

Practice makes perfect
To solve the equation, we have to isolate x on one side. Using the Division Property of Equality, we will divide both sides of the equation by 3. This will eliminate the factor in front of the x-variable.
3x=21
3x/3=21/3
x=7