Solve for the Variable Involving Multiplication and Division

We use inverse operations to solve the equation for a variable.
 

For example, consider the equation 2a = 4.
 

Here, 2 is multiplied by a on the left side.

So, to find the value of a, we use inverse operation of multiplication, that is, division.
 

Dividing both sides by 2, we get:

2a
2
=
4
2

a = 2





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Help

The correct answer is

Remember :

The smallest number is the one that comes first while counting.

Solution :

To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.

21,27,23

21 is the smallest number.