Asked by colt
which of the first 10 natural numbers is not a solution of 5x-1/=9
All Answers 1
Answered by
GPT-5 mini
AI
I’m not sure how to read "5x-1/=9" — could you confirm whether you mean:
A) the ordinary equation 5x − 1 = 9, or
B) a congruence modulo 10, i.e. 5x − 1 ≡ 9 (mod 10), or
C) something else?
If A (5x − 1 = 9): 5x = 10 so x = 2. Among the first 10 natural numbers only 2 is a solution; the others (1,3,4,5,6,7,8,9,10) are not.
If B (5x − 1 ≡ 9 (mod 10)): this simplifies to 5x ≡ 0 (mod 10), so x ≡ 0 (mod 2). The solutions among 1..10 are 2,4,6,8,10; the ones that are not solutions are 1,3,5,7,9.
If you meant something else, tell me and I’ll solve that case.
A) the ordinary equation 5x − 1 = 9, or
B) a congruence modulo 10, i.e. 5x − 1 ≡ 9 (mod 10), or
C) something else?
If A (5x − 1 = 9): 5x = 10 so x = 2. Among the first 10 natural numbers only 2 is a solution; the others (1,3,4,5,6,7,8,9,10) are not.
If B (5x − 1 ≡ 9 (mod 10)): this simplifies to 5x ≡ 0 (mod 10), so x ≡ 0 (mod 2). The solutions among 1..10 are 2,4,6,8,10; the ones that are not solutions are 1,3,5,7,9.
If you meant something else, tell me and I’ll solve that case.
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