Question

find the solution of following equation by trial and error method 5 n+ 15 is equal to 20​ ​

Answer 1

Answer:

n= 1

Step-by-step explanation:

taking value of n as 1

Hence the equation becomes

5(1)+15=20

LHS

5(1)+15

=5+15

=20

RHS

20

Hence LHS=RHS

so n=1

Answer 2

Answer:

n=1

Step-by-step explanation:

put n=0,

5x0+15 = 15 is not equal to 20

put n=1,

5x1 +15 = 20

therefore n=1