Question

(a) 7n+ 5 = 19 ( n=2)​

Answer 1

Answer:

7n + 5 = 7 × (2) + 5 = 14 + 5 = 19 = R.H.S.

As L.H.S. = R.H.S.,

Therefore, n = 2 is a solution of the given equation,

7n + 5 = 19.

Answer 2

Answer:

19

Step-by-step explanation:

Here it is given that n=2, and there is no sign between 7 and n. This means whenever there is no sign between a number and an alphabet we have to multiple them.

7×2 = 14.

14+5 = 19.

HOPE IT HELPS.