Question

please solve this sir​

Answer 1

EXPLANATION.

⇒ (n/3) - (2/7) = (21/3) + n.

As we know that,

We can write equation as,

⇒ (n/3) - (n) = (21/3) + (2/7).

⇒ (n - 3n)/3 = 7 + 2/7.

⇒ (-2n)/3 = (49 + 2)/7.

⇒ (-2n)/3 = (51)/7.

⇒ (-2n) x 7 = 51 x 3.

⇒ (- 14n) = 153.

⇒ n = - 153/14.

Option [A] is correct answer.