body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

Chapter Review

Continue to next subchapter

Exercise 6 Page 44

Combine like terms, then isolate n.

n=6

Practice makes perfect

We can solve the equation by combining like terms and then isolating n.

n+5n+7=43

Add terms

6n+7=43

LHS-7=RHS-7

6n+7-7=43-7

Subtract terms

6n=36

.LHS /6.=.RHS /6.

6n/6=36/6

Calculate quotient

n=6

Let's check our solution by substituting n=6 into the original equation.

n+5n+7=43

n= 6

6+5( 6)+7? =43

▼

Simplify LHS

Multiply

6+30+7? =43

Add terms

43=43 ✓

Since the left-hand side and right-hand side are equal, we know the solution is correct.

Subchapter links

1 Solving Simple Equations p.44

2 Solving Multi-Step Equations p.44

3 Solving Equations with Variables on Both Sides p.45

4 Solving Absolute Value Equations p.45

5 Rewriting Equations and Formulas p.46