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determina numarul natural n, stiind ca : 7^n+3=7^7

Răspuns :

[tex] 7^{n+3} = 7^{7} \\ n+3= 7 \\ n=7-3 \\ n=4[/tex]
7ⁿ⁺³ = 7⁷
n + 3 = 7
n = 7 - 3
n = 4