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2015-09-14T16:49:17+05:30

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First subtract 5 from 19
we are left with
7n=14
what multiplied by 7 is equal to 14? 2.
therefore
n=2.

7n + 5=19
7n=19 - 5
n=(19 - 5) ÷ 7
n=2
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