2/7 - 1/81 as a fraction

Learn how to find what is 2/7 minus 1/81 in fraction form just in a few minutes. We have covered the easiest method to write 2/7 - 1/81 as a fraction and decimal.

Summary: 2/7 minus 1/81 = 155/567
Since both fractions have unequal denominators, 2/7 minus 1/81 is an unlike fractions subtraction. For subtracting unlike fractions, you have to first find the equivalent fractions for fraction 2/7 and fraction 1/81 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 7 and 81. 567 is the LCM of 7 and 81. Multiplying the LCM 567 with the numerators and denominators of both fractions (2/7 x 567/567) - (1/81 x 567/567), and simplify further in order to have the common denominator. So the equivalent fraction for 2/7 is 162/567 and for 1/81 is 7/567. By simplifying this fraction subtraction 162/567 - 7/567, it becomes 155/567.

Pie Chart Representation: 2/7 - 1/81 = 155/567

CALCULATION: 2/7 - 1/81 as a fraction
2/7 - 1/81 = (?)
2/7 - 1/81 = [(2 x 81) - (1 x 7)]/(7 x 81)
= (162 - 7)/567
= 155/567
2/7 - 1/81 = 155/567
2/7 minus 1/81 as a fraction is 155/567.

where
2/7 is a proper fraction as a minuend,
1/81 is a proper fraction as a subtrahend,
155/567 is the difference between 2/7 and 1/81.

---

2/7 minus 1/81 as a decimal
2/7 - 1/81 = 155/567
155/567 = 0.2734
(2/7) - (1/81) as a decimal is 0.2734

where
0.2734 is the difference between 2/7 and 1/81.

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 1/81 from 2/7. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 2/7 minus 1/81.
1. LCM method
2. Cross multiplication method.

(2/7) - (1/81) using LCM Method:
What is 2/7 minus 1/81 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 2/7
Fraction B: 1/81

What to be found?
(2/7) - (1/81) = ?
Find what's the difference between 2/7 and 1/81.

step 2 Compare the denominators of fractions 2/7 and 1/81 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 2/7 and 1/81 are not equal, it is said to be unlike fractions subtraction.

step 3For unlike fractions subtraction, find the LCM (least common multiple) of both denominators of fractions 2/7 and 1/81:
The LCM of 7 and 81 is 567.

step 4 Write the fractions 2/7 and 1/81 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
= 2/7 - 1/81
= [(2 x 567)/(7 x 567)] - [(1 x 567)/(81 x 567)]

step 5 Simplify the expression to have common denominator:
= 162/567 - 7/567

step 6 Take the common values out and rewrite the above expression like the below:
= 1/567 x (162/1 - 7/1)
= 1/567 x (162 - 7)

step 7Simplify the above expression further:
= 1/567 x 155
= 155/567
2/7 - 1/81 = 155/567

Hence,
2/7 minus 1/81 as a fraction is 155/567.

---

2/7 - 1/81 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 2/7
Fraction B: 1/81

What to be found?
(2/7)-(1/81) = ?
Find what's the difference between 2/7 and 1/81.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (2 x 81), find the product of numerator of Fraction B and denominator of Fraction A (1 x 7), and find the product of both denominators of Fraction A and Fraction B (7 x 81) and rewrite the equation as like the below:
= (2 x 81) - (1 x 7)/(7 x 81)

step 3 Simplify and rewrite the fraction:
= (162 - 7)/567
2/7 - 1/81 = 155/567

Hence,
2/7 minus 1/81 in fraction is 155/567