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Big Ideas Math Geometry, 2014
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Big Ideas Math Geometry, 2014 View details
5. Measuring and Constructing Angles
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Exercise 61 Page 46

Use the Subtraction Property of Equality to eliminate the addition.

x=71

Practice makes perfect
To solve the equation, we have to isolate x on one side. Using the Subtraction Property of Equality, we will subtract 109 from both sides of the equation. This will eliminate the addition and isolate x.
x+109=180
SubEqn

LHS-109=RHS-109

x+109-109=180-109
SubTerms

Subtract terms

x=71
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