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Houghton Mifflin Harcourt Algebra 1, 2015

HM

Houghton Mifflin Harcourt Algebra 1, 2015 View details

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Exercise 3 Page 164

Isolate n using inverse operations.

n=8

Practice makes perfect

To solve the equation, we need to isolate n using inverse operations and the Properties of the Equality. We will start by distributing 3.

3(2n-7)+12=39

Distribute 3

3*2n+3*(-7)+12=39

Multiply

6n-21+12=39

Add terms

6n-9=39

LHS+9=RHS+9

6n-9+9=39+9

Add terms

6n=48

.LHS /6.=.RHS /6.

6n/6=48/6

Calculate quotient

n=8

Subchapter links

Exercises p.164