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Big Ideas Math: Modeling Real Life, Grade 6
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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
SubEqn

LHS-8=RHS-8

s+8-8=17-8
SubTerm

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
Substitute

s= 9

9 + 8 ? =17
AddTerms

Add terms

17 = 17 ✓

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

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arrow_right Try It p.252-254
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Try It 2 (Page 252)
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