Question

n/2 - 3n/4 + 5n/6 = 21​​

Answer 1

Answer:

n=36

Step-by-step explanation:

(6n-9n+10n)/12=21

-3n+10n=252

7n=252

n=36

Answer 2

$\frac{n}{2} - \frac{3n}{4} + \frac{5n}{6} = 21 \\ \frac{6n - 9n + 10n}{12} = 21 \: \: \: \: \: since \: lcm \: of \: 2 \: and \: 4 \: and \: 6 = 12 \\ 16n - 9n = 21 \times 12 \\ 7n = 252 \\ n = \frac{252}{7} \\ n = 36$

Hope it helps you.

Please mark it as brainliest and follow me!!!!!