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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
2. Dividing Integers
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Exercise 41 Page 60

Substitute 10 for x, - 2 for y, and - 5 for z in the expression and then simplify as much as possible.

65

Practice makes perfect

We are given an expression and asked to evaluate it for some given values. - x^2+6z/y This means that we should substitute 10 for x, - 2 for y, and - 5 for z in the given expression and then simplify as much as possible. Let's do it!

- x^2+6z/y
SubstituteValues

Substitute values

- ( 10)^2+6( - 5)/- 2
CalcPow

Calculate power

- 100+6(- 5)/- 2
MultPosNeg

a(- b)=- a * b

- 100+(- 30)/- 2
AddNeg

a+(- b)=a-b

- 100-30/- 2
SubTerm

Subtract term

- 130/- 2
DivNegNeg

- a/- b=a/b

130/2
CalcQuot

Calculate quotient

65
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arrow_right Try It p.56-57
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arrow_right Self-Assessment for Concept & Skills p.57
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arrow_right Self-Assessment for Problem Solving p.58
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