28n
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6N/7
7n = 28n = 28/7 = 4
(2n + 7)(2n + 7)
if you want to find a number such that 14 is 28% of it, here is how we do it. let the number be n .28n means 28% of n we want .28n=14 this is 14/.28 or 50 let's check is 28% or 28x50=14
((2n + 8)) x 5 = 6n + 12ie 10n + 40 = 6n + 124n = -28n = -7(both equations total -30)