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 2 Page 252

Substitute 3 into the given equation and then simplify.

No

Practice makes perfect
We can determine whether 3 is a solution by substituting it into the equation and simplifying using the order of operations.
9-g = 5
9- 3 ? =5
6 ≠ 5 *
Since both sides are not equal, 3 is not a solution.