Exercise 6 Page 441

s=7

Practice makes perfect

To solve the equation, we have to isolate a on one side. Using the Subtraction Property of Equality, we can subtract 7 from both sides of the equation. This will eliminate addition on the right-hand side and isolate s.

14=s+7

LHS- 7=RHS- 7

14- 7=s+7- 7

Subtract terms

7=s

Rearrange equation

s=7

To check that this solution is correct, let's substitute s=7 into the original equation and simplify.

14=s+7

s= 7

14? = 7+7

Add terms

14=14 ✓

Because the left-hand side and right-hand side are equal, s=7 is the correct solution.

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

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