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If p is 13 then 13-21 = -8
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What is p if p plus negative 13 equals 8?
p + (-13) = 8 p = 21
A student opens a mathematics book to two facing pages. The product of the pages numbers is 420. Find the page numbers?
If one of the pages is numbered p, the other is p+1. So p*(p+1) = 420 That is, p2 + p - 420 = 0 which factorises as (p - 20)*(p + 21) = 0 That implies that p = 20 or p = -21. Assuming that pages do not have negative numbers, p = 20 and then the other page is p+1 = 21.
What is 6p plus 1 equals p plus 21?
p = 4
Solve the inequality 3p -6 21?
p>9
When p equals 7 what is 3p-25 over 2?
If p = 7 then 3p must equal 21. So 21 - 25 = -4 and -4 divided by 2 = -2
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