kaylatawadrous kaylatawadrous

03-02-2017
Mathematics

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Twice the difference of a number and five is equal to three times the sum of the number and seven

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sawahli sawahli

07-02-2017

2(n-5)=3(n+7)
2n - 10= 3n +21
-10 - 21 = 3n- 2n
n=-31

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