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Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
4. Factorizing Expressions
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Exercise 39 Page 114

Rewrite each term as a product of - 6 and some other factor.

- 6 ( - 3z+ 5/2 )

Practice makes perfect
Let's rewrite each term as a product of - 6 and some other factor. To do so, note that that product of two negative numbers gives a positive number. 1{ 18z &= {\color{#FD9000}{\text{-} 6}} (\text{-} 3z) \\[0.5em] 15 &= {\color{#FD9000}{\text{-} 6}} (\text{-} 2.5) } Now we can use the Distributive Property to factor the expression. Let's go!
18z-15
SplitIntoFactors

Split into factors

- 6 (- 3z) -(- 6) (- 2.5)
FactorOut

Factor out - 6

- 6[- 3z-(- 2.5)]
SubNeg

a-(- b)=a+b

- 6(- 3z+2.5)
WriteAsFrac

Write as a fraction

- 6 ( - 3z+ 5/2 )
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arrow_right Try It p.110-111
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Try It 2 (Page 110)
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arrow_right Self-Assessment for Concept & Skills p.111
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arrow_right Self-Assessment for Problem Solving p.112
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arrow_right Review & Refresh p.113
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