Question

$\frac{2n}{n + 16} = \frac{5}{9}$
cat e n?????????????​

Answer 1

Răspuns:

[tex] \frac{2n}{n + 16} = \frac{5}{9} \\ 2n \times 9 = 5(n + 16) \\ 18n = 5n + 80 \\ 13n = 80 \\ n = \frac{80}{8

13}

Answer 2

Răspuns:

2/(n+16)=5/9

5(n+16)=2n·9

5n+80=18n

80=18n-5n

n=80/13