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October 25, 2014

Posted by **Cassie** on Wednesday, January 18, 2012 at 5:44pm.

3(g-3)=6

Please explain how to do this

Rules:

Use Distributive Property

Combine like terms

Solve by using inverse operations

- Math -
**Ms. Sue**, Wednesday, January 18, 2012 at 5:47pm3(g-3)=6

3g - 9 = 6

3g - 9 + 9 = 6 + 9

3g = 15

g = 15/3

g = 5

- Math -
**Cassie**, Wednesday, January 18, 2012 at 5:50pmWhat about :

5(2c+7)=80

- Math -
**Cassie**, Wednesday, January 18, 2012 at 5:52pmI don't understand it still

- Math -
**Ms. Sue**, Wednesday, January 18, 2012 at 6:11pm5(2c+7)=80

Parentheses means multiply.

10c + 35 = 80

Get the knowns on one side -- so subtract 35 from each side.

10c + 35 - 35 = 80 - 35

10c = 45

Divide both sides by 10

c = 45/10

c = 4.5

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