# Solve for the Variable Involving Multiplication and Division

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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

ds

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### Help

##### 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.