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2015-11-10T09:29:53+05:30

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Lets,a number =n
Twice a number =2n
so, 7 less than twice =2n-7.
                                          
 

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2015-11-10T10:38:29+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Let n be the number
Twice the number is 2n
Seven less than twice the number is 2n-7
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