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Question Number 152691 by ZiYangLee last updated on 31/Aug/21
If a,p,q are primes with a<p, and  a+p=q, find the value of a.
Ifa,p,qareprimeswitha<p,anda+p=q,findthevalueofa.
Answered by Rasheed.Sindhi last updated on 01/Sep/21
odd+odd=even  ⇒odd prime+odd prime=even     (prime_1 <prime_2 ) ∧ (prime_1 +prime_2 =odd)  ⇒prime_1 =2  ∴a<p ∧ a+p=q⇒a=2
odd+odd=evenoddprime+oddprime=even(prime1<prime2)(prime1+prime2=odd)prime1=2a<pa+p=qa=2

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