2/8 - 1/81 as a fraction

Learn how to find what is 2/8 minus 1/81 in fraction form just in a few minutes. We have covered the easiest method to write 2/8 - 1/81 as a fraction and decimal.

Summary: 2/8 minus 1/81 = 77/324
Since both fractions have unequal denominators, 2/8 minus 1/81 is an unlike fractions subtraction. For subtracting unlike fractions, you have to first find the equivalent fractions for fraction 2/8 and fraction 1/81 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 8 and 81. 648 is the LCM of 8 and 81. Multiplying the LCM 648 with the numerators and denominators of both fractions (2/8 x 648/648) - (1/81 x 648/648), and simplify further in order to have the common denominator. So the equivalent fraction for 2/8 is 162/648 and for 1/81 is 8/648. By simplifying this fraction subtraction 162/648 - 8/648, it becomes 154/648.

Pie Chart Representation: 2/8 - 1/81 = 77/324

CALCULATION: 2/8 - 1/81 as a fraction
2/8 - 1/81 = (?)
2/8 - 1/81 = [(2 x 81) - (1 x 8)]/(8 x 81)
= (162 - 8)/648
= 154/648
= (2 x 77)/(2 x 324)
= 77/324
2/8 - 1/81 = 77/324
2/8 minus 1/81 as a fraction is 77/324.

where
2/8 is a proper fraction as a minuend,
1/81 is a proper fraction as a subtrahend,
77/324 is the difference between 2/8 and 1/81.

---

2/8 minus 1/81 as a decimal
2/8 - 1/81 = 77/324
77/324 = 0.2377
(2/8) - (1/81) as a decimal is 0.2377

where
0.2377 is the difference between 2/8 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 2/8. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 2/8 minus 1/81.
1. LCM method
2. Cross multiplication method.

(2/8) - (1/81) using LCM Method:
What is 2/8 minus 1/81 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 2/8
Fraction B: 1/81

What to be found?
(2/8) - (1/81) = ?
Find what's the difference between 2/8 and 1/81.

step 2 Compare the denominators of fractions 2/8 and 1/81 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 2/8 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 2/8 and 1/81:
The LCM of 8 and 81 is 648.

step 4 Write the fractions 2/8 and 1/81 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
= 2/8 - 1/81
= [(2 x 648)/(8 x 648)] - [(1 x 648)/(81 x 648)]

step 5 Simplify the expression to have common denominator:
= 162/648 - 8/648

step 6 Take the common values out and rewrite the above expression like the below:
= 1/648 x (162/1 - 8/1)
= 1/648 x (162 - 8)

step 7Simplify the above expression further:
= 1/648 x 154
= 154/648
= 77/324
2/8 - 1/81 = 77/324

Hence,
2/8 minus 1/81 as a fraction is 77/324.

---

2/8 - 1/81 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 2/8
Fraction B: 1/81

What to be found?
(2/8)-(1/81) = ?
Find what's the difference between 2/8 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 8), and find the product of both denominators of Fraction A and Fraction B (8 x 81) and rewrite the equation as like the below:
= (2 x 81) - (1 x 8)/(8 x 81)

step 3 Simplify and rewrite the fraction:
= (162 - 8)/648
= 154/648
= 77/324
2/8 - 1/81 = 77/324

Hence,
2/8 minus 1/81 in fraction is 77/324