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Big Ideas Math Integrated I, 2016 View details

3. Postulates and Diagrams

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Exercise 37 Page 464

Use the Subtraction Property of Equality to eliminate the addition.

Solution: x=4
Property: Subtraction Property of Equality

Practice makes perfect

To solve the equation, we have to isolate x on one side. Using the Subtraction Property of Equality, we will subtract 9 from both sides of the equation. This will eliminate the addition and isolate x.

9+x=13

SubEqn

LHS-9=RHS-9

9+x-9=13-9

CommutativePropAdd

Commutative Property of Addition

x+9-9=13-9

SubTerms

Subtract terms

x=4