Definition Of Value Of A Variable

A numerical quantity assigned to a variable is called its value.

More About Value of a Variable

Solving or evaluating the equation or expression can determine the value of a variable.

Example of Value of a Variable

Let us find the value of y of the equation y = 2x - 3, where x = 4.
y = 2x - 3 = 2(4) - 3 = 8 - 3 = 5, therefore, the value of y is 5.

Video Examples: How to find the value of a variable

Solved Example on Value of a Variable

Ques: Find the value of the variable y in the equation 16 + y = - 41

Choices:

A. - 57
B. 59
C. 57
D. 69
Correct Answer: A

Solution:

Step 1: 16 + y = - 41 [Original equation.]
Step 2: 16 + y - 16 = - 41 - 16 [Subtract 16 from each side.]
Step 3: y = - (41 + 16) [Use associative property of addition.]
Step 4: y = - 57 [Add inside the grouping symbols.]

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