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Big Ideas Math Geometry, 2014
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Big Ideas Math Geometry, 2014 View details
1. Points, Lines, and Planes
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Exercise 71 Page 10

Use the Addition Property of Equality to eliminate the subtraction.

x=22

Practice makes perfect

To solve the equation, we have to isolate x on one side. Using the Addition Property of Equality, we will add 15 to both sides of the equation. This will eliminate the subtraction and isolate x.

x-15=7
AddEqn

LHS+15=RHS+15

x-15+15=7+15
AddTerms

Add terms

x=22
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