18/13 + 15/11 as a fraction

Learn how to find what is 18/13 plus 15/11 in fraction form just in a few minutes. We have covered the easiest method to write 18/13 + 15/11 as a fraction and decimal.

Summary: 18/13 plus 15/11 = 393/143
Since both fractions have unequal denominators, 18/13 plus 15/11 is an unlike fractions addition. For adding unlike fractions, you have to first find the equivalent fractions for fraction 18/13 and fraction 15/11 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 13 and 11. 143 is the LCM of 13 and 11. Multiplying the LCM 143 with the numerators and denominators of both fractions (18/13 x 143/143) + (15/11 x 143/143), and simplify further in order to have the common denominator. So the equivalent fraction for 18/13 is 198/143 and for 15/11 is 195/143. By simplifying this fraction addition 198/143 + 195/143, it becomes 393/143.

CALCULATION: 18/13 + 15/11 as a fraction
18/13 + 15/11 = (?)
18/13 + 15/11 = [(18 x 11) + (15 x 13)]/(13 x 11)
= (198 + 195)/143
= 393/143
18/13 + 15/11 = 393/143
18/13 plus 15/11 as a fraction is 393/143.

where
18/13 is a improper fraction as an addend,
15/11 is a improper fraction as an addend,
393/143 is the sum of 18/13 and 15/11.

---

18/13 plus 15/11 as a decimal
18/13 + 15/11 = 393/143
393/143 = 2.7483
(18/13) + (15/11) as a decimal is 2.7483

where
2.7483 is the sum of 18/13 and 15/11.

The below workout with step by step calculation shows how to find the equivalent fraction between 18/13 and 15/11 by adding two fractions with different, unequal or unlike denominators. The sum in fraction form for 18/13 plus 15/11 can be obtained by using anyone of the two methods below.
1. LCM method
2. Cross multiplication method.

(18/13) + (15/11) using LCM Method:
What is 18/13 plus 15/11 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 18/13
Fraction B: 15/11

What to be found?
(18/13) + (15/11) = ?
Find what's the sum of 18/13 and 15/11.

step 2 Compare the denominators of fractions 18/13 and 15/11 to identify whether it is a like or unlike fraction addition. Since the denominators of given fractions 18/13 and 15/11 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 18/13 and 15/11:
The LCM of 13 and 11 is 143.

step 4 Write the fractions 18/13 and 15/11 in the addition expression form and multiply LCM with all the numerators and denominators of both fractions.
= 18/13 + 15/11
= [(18 x 143)/(13 x 143)] + [(15 x 143)/(11 x 143)]

step 5 Simplify the expression to have common denominator:
= 198/143 + 195/143

step 6 Take the common values out and rewrite the above expression like the below:
= 1/143 x (198/1 + 195/1)
= 1/143 x (198 + 195)

step 7Simplify the above expression further:
= 1/143 x 393
= 393/143
18/13 + 15/11 = 393/143

Hence,
18/13 plus 15/11 as a fraction is 393/143.

---

18/13 + 15/11 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 18/13
Fraction B: 15/11

What to be found?
(18/13)+(15/11) = ?
Find what's the sum of 18/13 and 15/11.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (18 x 11), find the product of numerator of Fraction B and denominator of Fraction A (15 x 13), and find the product of both denominators of Fraction A and Fraction B (13 x 11) and rewrite the equation as like the below:
= (18 x 11) + (15 x 13)/(13 x 11)

step 3 Simplify and rewrite the fraction:
= (198 + 195)/143
18/13 + 15/11 = 393/143

Hence,
18/13 plus 15/11 in fraction is 393/143