Question

7 - n/2 = 5
use trial and error method should atleast get two wrong

Answer 1

Answer:

7 - n / 2 = 5

7 - n = 5 × 2

7 - n = 10

-n = 10 - 7

- n = 3

Hence ;

n = -3

Trial & Error Method :

Let ,

The value of n = -1

7 + 1 / 2 = 5

8 = 10

Wrong

Let ;

n = -2

7 + 1 = 5

8 = 5

Wrong

Let ;

The n = -3

7 + 3 = 10

Hence ;

n = -3