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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 30 Page 256

Use the Subtraction Property of Equality to eliminate the addition.

q= 11

Practice makes perfect

To solve the equation, we have to isolate q on one side. Using the Subtraction Property of Equality, we will subtract 14 from both sides of the equation. This will eliminate the addition and isolate q.

25 = q + 14
SubEqn

LHS-14=RHS-14

25-14= q + 14-14
SubTerm

Subtract term

11 = q
RearrangeEqn

Rearrange equation

q= 11

To check that this solution is correct, let's substitute q= 11 into the original equation and simplify.

25 = q + 14
Substitute

q= 11

25 ? = 11 + 14
AddTerms

Add terms

25= 25 ✓

Since the left-hand side and right-hand side are equal, q= 11 is the correct solution.

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arrow_right Try It p.252-254
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