11/2 + 13/8 as a fraction

Learn how to find what is 11/2 plus 13/8 in fraction form just in a few minutes. We have covered the easiest method to write 11/2 + 13/8 as a fraction and decimal.

Summary: 11/2 plus 13/8 = 57/8
Since both fractions have unequal denominators, 11/2 plus 13/8 is an unlike fractions addition. For adding unlike fractions, you have to first find the equivalent fractions for fraction 11/2 and fraction 13/8 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 2 and 8. 8 is the LCM of 2 and 8. Multiplying the LCM 8 with the numerators and denominators of both fractions (11/2 x 8/8) + (13/8 x 8/8), and simplify further in order to have the common denominator. So the equivalent fraction for 11/2 is 44/8 and for 13/8 is 13/8. By simplifying this fraction addition 44/8 + 13/8, it becomes 57/8.

CALCULATION: 11/2 + 13/8 as a fraction
11/2 + 13/8 = (?)
11/2 + 13/8 = [(11 x 8) + (13 x 2)]/(2 x 8)
= (88 + 26)/16
= 114/16
= (2 x 57)/(2 x 8)
= 57/8
11/2 + 13/8 = 57/8
11/2 plus 13/8 as a fraction is 57/8.

where
11/2 is a improper fraction as an addend,
13/8 is a improper fraction as an addend,
57/8 is the sum of 11/2 and 13/8.

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11/2 plus 13/8 as a decimal
11/2 + 13/8 = 57/8
57/8 = 7.125
(11/2) + (13/8) as a decimal is 7.125

where
7.125 is the sum of 11/2 and 13/8.

The below workout with step by step calculation shows how to find the equivalent fraction between 11/2 and 13/8 by adding two fractions with different, unequal or unlike denominators. The sum in fraction form for 11/2 plus 13/8 can be obtained by using anyone of the two methods below.
1. LCM method
2. Cross multiplication method.

(11/2) + (13/8) using LCM Method:
What is 11/2 plus 13/8 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 11/2
Fraction B: 13/8

What to be found?
(11/2) + (13/8) = ?
Find what's the sum of 11/2 and 13/8.

step 2 Compare the denominators of fractions 11/2 and 13/8 to identify whether it is a like or unlike fraction addition. Since the denominators of given fractions 11/2 and 13/8 are not equal, it is said to be unlike fractions addition.

step 3For unlike fractions addition, find the LCM (least common multiple) of both denominators of fractions 11/2 and 13/8:
The LCM of 2 and 8 is 8.

step 4 Write the fractions 11/2 and 13/8 in the addition expression form and multiply LCM with all the numerators and denominators of both fractions.
= 11/2 + 13/8
= [(11 x 8)/(2 x 8)] + [(13 x 8)/(8 x 8)]

step 5 Simplify the expression to have common denominator:
= 44/8 + 13/8

step 6 Take the common values out and rewrite the above expression like the below:
= 1/8 x (44/1 + 13/1)
= 1/8 x (44 + 13)

step 7Simplify the above expression further:
= 1/8 x 57
= 57/8
11/2 + 13/8 = 57/8

Hence,
11/2 plus 13/8 as a fraction is 57/8.

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11/2 + 13/8 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 11/2
Fraction B: 13/8

What to be found?
(11/2)+(13/8) = ?
Find what's the sum of 11/2 and 13/8.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (11 x 8), find the product of numerator of Fraction B and denominator of Fraction A (13 x 2), and find the product of both denominators of Fraction A and Fraction B (2 x 8) and rewrite the equation as like the below:
= (11 x 8) + (13 x 2)/(2 x 8)

step 3 Simplify and rewrite the fraction:
= (88 + 26)/16
= 114/16
= 57/8
11/2 + 13/8 = 57/8

Hence,
11/2 plus 13/8 in fraction is 57/8