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Big Ideas Math: Modeling Real Life, Grade 6

BI

Big Ideas Math: Modeling Real Life, Grade 6 View details

2. Solving Equations Using Addition or Subtraction

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Exercise 8 Page 254

Use the Subtraction Property of Equality to eliminate the addition.

s=9

Practice makes perfect

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

s+8=17

LHS-8=RHS-8

s+8-8=17-8

Subtract term

s=9

To check that this solution is correct, let's substitute s=9 into the original equation and simplify.

s+8 = 17

s= 9

9 + 8 ? =17

Add terms

17 = 17 ✓

Since the left-hand side and right-hand side are equal, s=9 is the correct solution.

Subchapter links

Try It p.252-254

Self-Assessment for Concepts & Skills p.254

Self-Assessment for Problem Solving p.255

Review & Refresh p.256

Concepts, Skills, & Problem Solving p.256-258