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July 23, 2014

July 23, 2014

Posted by **Anonymous** on Sunday, October 2, 2011 at 6:26pm.

3x + 7x =120

It will help if you explain it too. Thanks!

- PRE-ALGEBRA -
**Ms. Sue**, Sunday, October 2, 2011 at 6:27pm3x + 7x =120

10x = 120

This means that 10 time some number is 120.

Divide both sides of the equation by 10.

x = 120/10

x = ?

- PRE-ALGEBRA -
**bobpursley**, Sunday, October 2, 2011 at 6:28pmcombine like terms

10x=120

divide both sides by 10

x= 12

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