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October 20, 2014

October 20, 2014

Posted by **MONA** on Tuesday, November 1, 2011 at 8:28pm.

was the original price of the phone if he

got it at a 30% discount?

- ALGEBRA- MATH -
**Ms. Sue**, Tuesday, November 1, 2011 at 8:33pm0.7x = 168

Solve for x.

- ALGEBRA- MATH -
**Cindy**, Tuesday, November 1, 2011 at 9:16pmA good way to deal with decimals is to multiply each "group" (separated by + or - signs) by the place to the right of the decimal. So for this problem, you could multiply 0.7 by 10, since it goes to the tenths place, and 168 by 10 as well, since that is another group. DO NOT FORGET TO MULTIPLY THE OTHER GROUPS!!! So your new equation would be 7x=1680. This process has worked great for me :) Just thought I'd share :)

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