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

1. Solving Simple Equations

Continue to next subchapter

Exercise 3 Page 4

Use the Subtraction Property of Equality.

p=- 10.4, see solution.

Practice makes perfect

To solve the given equation for p, we need to isolate it by subtracting 3.9 from both sides of the equation. We want to subtract 3.9 because addition and subtraction are inverse operations — they cancel each other out. This is allowed by the Subtraction Property of Equality.

- 6.5=p+3.9

LHS-3.9=RHS-3.9

- 6.5-3.9=p+3.9-3.9

Subtract terms

- 10.4=p

Rearrange equation

p=- 10.4

We will check our solution by substituting this result back into the original equation and simplifying. If doing so results in an identity, our solution is correct.

- 6.5=p+3.9

p= - 10.4

- 6.5? =- 10.4+3.9

Add terms

- 6.5=- 6.5 ✓

Since substituting p=- 10.4 resulted in an identity, our solution is correct.

Subchapter links

Communicate Your Answer p.3

Monitoring Progress p.4-7

Exercises p.8-10