Solve for the Variable Involving Addition, Subtraction, Multiplication, and Division

Use inverse operations to solve the equation for a variable.

For example, consider the equation a – 4 = 2.

Here, 4 is subtracted from a on the left side.

So, to find the value of a, we use inverse operation of subtraction, that is, addition.

Adding 4 to both the sides, we get:

 

a – 4 + 4 = 2 + 4

 

a = 6





ds

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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.