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Glencoe Math: Course 2, Volume 2

GM

Glencoe Math: Course 2, Volume 2 View details

1. Solve One-Step Addition and Subtraction Equations

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Exercise 5 Page 441

Use the Addition Property of Equality to eliminate the subtraction.

p=-1

Practice makes perfect

To solve the equation, we have to isolate p on one side. Using the Addition Property of Equality, we can add 1 to both sides of the equation. This will eliminate subtraction on the right-hand side and isolate p.

-2=p-1

LHS+ 1=RHS+ 1

-2+ 1=p-1+ 1

Add terms

-1=p

Rearrange equation

p=-1

To check that this solution is correct, let's substitute p=-1 into the original equation and simplify.

-2=p-1

p= -1

-2? = -1-1

Subtract term

-2=-2 ✓

Because the left-hand side and right-hand side are equal, p=-1 is the correct solution.

Subchapter links

Guided Practice p.440

Independent Practice p.441-442

H.O.T. Problems p.442

Standardized Test Practice p.442-444

Extra Practice p.443

Common Core Review p.444