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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 28 Page 256

Use the Subtraction Property of Equality to eliminate the addition.

h= 34

Practice makes perfect

To solve the equation, we have to isolate h on one side. Using the Subtraction Property of Equality, we will subtract 30 from both sides of the equation. This will eliminate the addition and isolate h.

64 = h +30

LHS-30=RHS-30

64-30=h+30-30

Subtract term

34 = h

Rearrange equation

h= 34

To check that this solution is correct, let's substitute h= 34 into the original equation and simplify.

64 = h +30

h= 34

64 ? = 34 + 30

Add terms

64 = 64 ✓

Since the left-hand side and right-hand side are equal, h= 34 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