Question

solve the following equation by trial and error method:1:7n+5=19(n=-2)​

Answer 1

Answer:

1 a)7n+5=19

Putting the value of n= -2

= 7×(-2)+5=19

= -14+5=19

= -9≠19

This equation is wrong.

b)7n+5=19

Putting the value of n=2

= 7×2+5=19

= 14+5=19

= 19=19

This equation is right.

c)4p-3=13

Putting the value of p=0

= 4×0-3=13

= 0-3=13

= -3≠13

This equation is wrong.

Answer 2

Answer:

n value doesn't suit in the equation