Question

Solve the following equation by Trial & Error Method.
$a-2=6$
[4 marks]

Answer 1

By trial and error method, we will check different values of a amd try to solve this equation.
let us take a = 1,
$$1-2=6$$
[1 mark]
$-1$ is not equal to 6 so $a=1$ is not correct
let us take $a=2$
$$2-2=6$$
[1 mark]
0 is not equal to 6 so a= 2 is not correct
let us take a higher value that is $a=7$,
$$7-2=5$$
​​​​​​​[1 mark]
so 5 is not equal to 6
so $a=5$ is not correct
let take $a=8$
$$8-2=6$$
Here we get the answer so a= 8 is correct value.
​​​​​​​​​​​​​​[1 mark]