15/4 + 7/9 as a fraction

Learn how to find what is 15/4 plus 7/9 in fraction form just in a few minutes. We have covered the easiest method to write 15/4 + 7/9 as a fraction and decimal.

Summary: 15/4 plus 7/9 = 163/36
Since both fractions have unequal denominators, 15/4 plus 7/9 is an unlike fractions addition. For adding unlike fractions, you have to first find the equivalent fractions for fraction 15/4 and fraction 7/9 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 4 and 9. 36 is the LCM of 4 and 9. Multiplying the LCM 36 with the numerators and denominators of both fractions (15/4 x 36/36) + (7/9 x 36/36), and simplify further in order to have the common denominator. So the equivalent fraction for 15/4 is 135/36 and for 7/9 is 28/36. By simplifying this fraction addition 135/36 + 28/36, it becomes 163/36.

CALCULATION: 15/4 + 7/9 as a fraction
15/4 + 7/9 = (?)
15/4 + 7/9 = [(15 x 9) + (7 x 4)]/(4 x 9)
= (135 + 28)/36
= 163/36
15/4 + 7/9 = 163/36
15/4 plus 7/9 as a fraction is 163/36.

where
15/4 is a improper fraction as an addend,
7/9 is a proper fraction as an addend,
163/36 is the sum of 15/4 and 7/9.

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15/4 plus 7/9 as a decimal
15/4 + 7/9 = 163/36
163/36 = 4.5278
(15/4) + (7/9) as a decimal is 4.5278

where
4.5278 is the sum of 15/4 and 7/9.

The below workout with step by step calculation shows how to find the equivalent fraction between 15/4 and 7/9 by adding two fractions with different, unequal or unlike denominators. The sum in fraction form for 15/4 plus 7/9 can be obtained by using anyone of the two methods below.
1. LCM method
2. Cross multiplication method.

(15/4) + (7/9) using LCM Method:
What is 15/4 plus 7/9 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 15/4
Fraction B: 7/9

What to be found?
(15/4) + (7/9) = ?
Find what's the sum of 15/4 and 7/9.

step 2 Compare the denominators of fractions 15/4 and 7/9 to identify whether it is a like or unlike fraction addition. Since the denominators of given fractions 15/4 and 7/9 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 15/4 and 7/9:
The LCM of 4 and 9 is 36.

step 4 Write the fractions 15/4 and 7/9 in the addition expression form and multiply LCM with all the numerators and denominators of both fractions.
= 15/4 + 7/9
= [(15 x 36)/(4 x 36)] + [(7 x 36)/(9 x 36)]

step 5 Simplify the expression to have common denominator:
= 135/36 + 28/36

step 6 Take the common values out and rewrite the above expression like the below:
= 1/36 x (135/1 + 28/1)
= 1/36 x (135 + 28)

step 7Simplify the above expression further:
= 1/36 x 163
= 163/36
15/4 + 7/9 = 163/36

Hence,
15/4 plus 7/9 as a fraction is 163/36.

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15/4 + 7/9 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 15/4
Fraction B: 7/9

What to be found?
(15/4)+(7/9) = ?
Find what's the sum of 15/4 and 7/9.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (15 x 9), find the product of numerator of Fraction B and denominator of Fraction A (7 x 4), and find the product of both denominators of Fraction A and Fraction B (4 x 9) and rewrite the equation as like the below:
= (15 x 9) + (7 x 4)/(4 x 9)

step 3 Simplify and rewrite the fraction:
= (135 + 28)/36
15/4 + 7/9 = 163/36

Hence,
15/4 plus 7/9 in fraction is 163/36