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 21 Page 8

Use the Division Property of Equality.

g=4, see solution.

Practice makes perfect

To solve the given equation for g, we need to isolate it by dividing both sides of the equation by 5. We want to divide because multiplication and division are inverse operations — they cancel each other out. This is allowed by the Division Property of Equality.

5g=20

.LHS /5.=.RHS /5.

5g/5=20/5

Calculate quotient

g=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.

5g=20

g= 4

5( 4)? =20

Multiply

20=20 ✓

Since substituting g=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