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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 4 Page 441

Use the Subtraction Property of Equality to eliminate the addition.

x=-3

Practice makes perfect

To solve the equation, we have to isolate x on one side. Using the Subtraction Property of Equality, we can subtract 8 from both sides of the equation. This will eliminate addition on the right-hand side and isolate x.

5=x+8

LHS- 8=RHS- 8

5- 8=x+8- 8

Subtract terms

-3=x

Rearrange equation

x=-3

To check that this solution is correct, let's substitute x=-3 into the original equation and simplify.

5=x+8

x= -3

5? = -3+8

Add terms

5=5 ✓

Because the left-hand side and right-hand side are equal, x=-3 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