15/4 + 1/7 as a fraction

Learn how to find what is 15/4 plus 1/7 in fraction form just in a few minutes. We have covered the easiest method to write 15/4 + 1/7 as a fraction and decimal.

Summary: 15/4 plus 1/7 = 109/28
Since both fractions have unequal denominators, 15/4 plus 1/7 is an unlike fractions addition. For adding unlike fractions, you have to first find the equivalent fractions for fraction 15/4 and fraction 1/7 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 4 and 7. 28 is the LCM of 4 and 7. Multiplying the LCM 28 with the numerators and denominators of both fractions (15/4 x 28/28) + (1/7 x 28/28), and simplify further in order to have the common denominator. So the equivalent fraction for 15/4 is 105/28 and for 1/7 is 4/28. By simplifying this fraction addition 105/28 + 4/28, it becomes 109/28.

CALCULATION: 15/4 + 1/7 as a fraction
15/4 + 1/7 = (?)
15/4 + 1/7 = [(15 x 7) + (1 x 4)]/(4 x 7)
= (105 + 4)/28
= 109/28
15/4 + 1/7 = 109/28
15/4 plus 1/7 as a fraction is 109/28.

where
15/4 is a improper fraction as an addend,
1/7 is a proper fraction as an addend,
109/28 is the sum of 15/4 and 1/7.

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15/4 plus 1/7 as a decimal
15/4 + 1/7 = 109/28
109/28 = 3.8929
(15/4) + (1/7) as a decimal is 3.8929

where
3.8929 is the sum of 15/4 and 1/7.

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

(15/4) + (1/7) using LCM Method:
What is 15/4 plus 1/7 as a fraction?

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

What to be found?
(15/4) + (1/7) = ?
Find what's the sum of 15/4 and 1/7.

step 2 Compare the denominators of fractions 15/4 and 1/7 to identify whether it is a like or unlike fraction addition. Since the denominators of given fractions 15/4 and 1/7 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 1/7:
The LCM of 4 and 7 is 28.

step 4 Write the fractions 15/4 and 1/7 in the addition expression form and multiply LCM with all the numerators and denominators of both fractions.
= 15/4 + 1/7
= [(15 x 28)/(4 x 28)] + [(1 x 28)/(7 x 28)]

step 5 Simplify the expression to have common denominator:
= 105/28 + 4/28

step 6 Take the common values out and rewrite the above expression like the below:
= 1/28 x (105/1 + 4/1)
= 1/28 x (105 + 4)

step 7Simplify the above expression further:
= 1/28 x 109
= 109/28
15/4 + 1/7 = 109/28

Hence,
15/4 plus 1/7 as a fraction is 109/28.

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

What to be found?
(15/4)+(1/7) = ?
Find what's the sum of 15/4 and 1/7.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (15 x 7), find the product of numerator of Fraction B and denominator of Fraction A (1 x 4), and find the product of both denominators of Fraction A and Fraction B (4 x 7) and rewrite the equation as like the below:
= (15 x 7) + (1 x 4)/(4 x 7)

step 3 Simplify and rewrite the fraction:
= (105 + 4)/28
15/4 + 1/7 = 109/28

Hence,
15/4 plus 1/7 in fraction is 109/28