Question

9a=18 trial and error method
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Answer 1

Answer:

If 9a=18 then a = 2

Step-by-step explanation:

9a = 18 find value of a by using trial and error method

Put a = 0

LHS = 9a

= 9(0)

= 0

≠  18

So, a = 0 is not a solution of 9a = 18.

Put a = 1

LHS = 9a

= 9(1)

= 9

≠  18

So, a = 1 is not a solution of 9a = 18.

Put a = 2

LHS = 9a

= 9(2)

=18

So, a = 2 is a solution of 9a = 18.

Answer 2

TRIAL AND ERROR METHOD

9a=18

let's the a at 2

9×2=18

Here our answer-2