8th grade pre algerbra

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8th grade pre algerbra

Beitragvon unknown » Mi Aug 22, 2012 2:52 pm

i have a question and i have tried everything !
rember this is 8th grade math...
question- rewrite 6+7x2-5 so that it equals 21.
unknown offline

Re: 8th grade pre algerbra

Beitragvon unknown » Mi Aug 22, 2012 3:05 pm

forget this...
i will get help at school :twisted:
unknown offline

Re: 8th grade pre algerbra

Beitragvon puddinggreg » Do Aug 23, 2012 4:46 pm

The order of operations needs to be changed. What you currently have is 15, but tweak it to look like this:

(6+7)x2-5

and the answer will be 21
puddinggreg offline

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