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2=564:n-56:n afla terminat necunoscut

Răspuns :

Dam factor comun pe n:

2=(564-56):n
2=508:n
n=508:2=254

Alta rezolvare e sub forma de fractii:

[tex]2= \frac{564}{n} - \frac{56}{n} \\ 2= \frac{564-56}{n} \\ 2= \frac{508}{n} \\ n= \frac{508}{2}=254 [/tex]
[tex]2= \frac{564}{n}- \frac{56}{n} [/tex] avem acelasi numitor deci nu mai are rost sa scriem doua fractii.
[tex]2= \frac{564-56}{n} \\ \\ 2= \frac{508}{n} \\ 2*n=508 \\ n= \frac{508}{2} \\ n=\boxed{254}[/tex]