6/7 + 7/20 as a fraction

Learn how to find what is 6/7 plus 7/20 in fraction form just in a few minutes. We have covered the easiest method to write 6/7 + 7/20 as a fraction and decimal.

Summary: 6/7 plus 7/20 = 169/140
Since both fractions have unequal denominators, 6/7 plus 7/20 is an unlike fractions addition. For adding unlike fractions, you have to first find the equivalent fractions for fraction 6/7 and fraction 7/20 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 7 and 20. 140 is the LCM of 7 and 20. Multiplying the LCM 140 with the numerators and denominators of both fractions (6/7 x 140/140) + (7/20 x 140/140), and simplify further in order to have the common denominator. So the equivalent fraction for 6/7 is 120/140 and for 7/20 is 49/140. By simplifying this fraction addition 120/140 + 49/140, it becomes 169/140.

CALCULATION: 6/7 + 7/20 as a fraction
6/7 + 7/20 = (?)
6/7 + 7/20 = [(6 x 20) + (7 x 7)]/(7 x 20)
= (120 + 49)/140
= 169/140
6/7 + 7/20 = 169/140
6/7 plus 7/20 as a fraction is 169/140.

where
6/7 is a proper fraction as an addend,
7/20 is a proper fraction as an addend,
169/140 is the sum of 6/7 and 7/20.

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6/7 plus 7/20 as a decimal
6/7 + 7/20 = 169/140
169/140 = 1.2071
(6/7) + (7/20) as a decimal is 1.2071

where
1.2071 is the sum of 6/7 and 7/20.

The below workout with step by step calculation shows how to find the equivalent fraction between 6/7 and 7/20 by adding two fractions with different, unequal or unlike denominators. The sum in fraction form for 6/7 plus 7/20 can be obtained by using anyone of the two methods below.
1. LCM method
2. Cross multiplication method.

(6/7) + (7/20) using LCM Method:
What is 6/7 plus 7/20 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 6/7
Fraction B: 7/20

What to be found?
(6/7) + (7/20) = ?
Find what's the sum of 6/7 and 7/20.

step 2 Compare the denominators of fractions 6/7 and 7/20 to identify whether it is a like or unlike fraction addition. Since the denominators of given fractions 6/7 and 7/20 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 6/7 and 7/20:
The LCM of 7 and 20 is 140.

step 4 Write the fractions 6/7 and 7/20 in the addition expression form and multiply LCM with all the numerators and denominators of both fractions.
= 6/7 + 7/20
= [(6 x 140)/(7 x 140)] + [(7 x 140)/(20 x 140)]

step 5 Simplify the expression to have common denominator:
= 120/140 + 49/140

step 6 Take the common values out and rewrite the above expression like the below:
= 1/140 x (120/1 + 49/1)
= 1/140 x (120 + 49)

step 7Simplify the above expression further:
= 1/140 x 169
= 169/140
6/7 + 7/20 = 169/140

Hence,
6/7 plus 7/20 as a fraction is 169/140.

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6/7 + 7/20 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 6/7
Fraction B: 7/20

What to be found?
(6/7)+(7/20) = ?
Find what's the sum of 6/7 and 7/20.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (6 x 20), find the product of numerator of Fraction B and denominator of Fraction A (7 x 7), and find the product of both denominators of Fraction A and Fraction B (7 x 20) and rewrite the equation as like the below:
= (6 x 20) + (7 x 7)/(7 x 20)

step 3 Simplify and rewrite the fraction:
= (120 + 49)/140
6/7 + 7/20 = 169/140

Hence,
6/7 plus 7/20 in fraction is 169/140