Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
1. Solving Equations Using Addition or Subtraction
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Exercise 3 Page 131

Write 45 as the product of - 25 and - 2.

- 2/5(w - 2)

Practice makes perfect
We want to factor out the coefficient of the variable term in the given expression. - 2/5w + 4/5The coefficient is equal to - 25. Let's split into factors - 25 and 45. One of the factors should be equal to - 25. - 2/5w&= - 2/5* w [1.1em] 4/5&= - 2/5* (- 2) Let's factor out - 25 from the expression.
- 2/5w + 4/5
- 2/5* w + ( - 2/5)* (- 2)
- 2/5(w - 2)