8/9 - 4/7 as a fraction

Learn how to find what is 8/9 minus 4/7 in fraction form just in a few minutes. We have covered the easiest method to write 8/9 - 4/7 as a fraction and decimal.

Summary: 8/9 minus 4/7 = 20/63
Since both fractions have unequal denominators, 8/9 minus 4/7 is an unlike fractions subtraction. For subtracting unlike fractions, you have to first find the equivalent fractions for fraction 8/9 and fraction 4/7 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 9 and 7. 63 is the LCM of 9 and 7. Multiplying the LCM 63 with the numerators and denominators of both fractions (8/9 x 63/63) - (4/7 x 63/63), and simplify further in order to have the common denominator. So the equivalent fraction for 8/9 is 56/63 and for 4/7 is 36/63. By simplifying this fraction subtraction 56/63 - 36/63, it becomes 20/63.

Pie Chart Representation: 8/9 - 4/7 = 20/63

CALCULATION: 8/9 - 4/7 as a fraction
8/9 - 4/7 = (?)
8/9 - 4/7 = [(8 x 7) - (4 x 9)]/(9 x 7)
= (56 - 36)/63
= 20/63
8/9 - 4/7 = 20/63
8/9 minus 4/7 as a fraction is 20/63.

where
8/9 is a proper fraction as a minuend,
4/7 is a proper fraction as a subtrahend,
20/63 is the difference between 8/9 and 4/7.

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8/9 minus 4/7 as a decimal
8/9 - 4/7 = 20/63
20/63 = 0.3175
(8/9) - (4/7) as a decimal is 0.3175

where
0.3175 is the difference between 8/9 and 4/7.

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 4/7 from 8/9. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 8/9 minus 4/7.
1. LCM method
2. Cross multiplication method.

(8/9) - (4/7) using LCM Method:
What is 8/9 minus 4/7 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 8/9
Fraction B: 4/7

What to be found?
(8/9) - (4/7) = ?
Find what's the difference between 8/9 and 4/7.

step 2 Compare the denominators of fractions 8/9 and 4/7 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 8/9 and 4/7 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 8/9 and 4/7:
The LCM of 9 and 7 is 63.

step 4 Write the fractions 8/9 and 4/7 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
= 8/9 - 4/7
= [(8 x 63)/(9 x 63)] - [(4 x 63)/(7 x 63)]

step 5 Simplify the expression to have common denominator:
= 56/63 - 36/63

step 6 Take the common values out and rewrite the above expression like the below:
= 1/63 x (56/1 - 36/1)
= 1/63 x (56 - 36)

step 7Simplify the above expression further:
= 1/63 x 20
= 20/63
8/9 - 4/7 = 20/63

Hence,
8/9 minus 4/7 as a fraction is 20/63.

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8/9 - 4/7 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 8/9
Fraction B: 4/7

What to be found?
(8/9)-(4/7) = ?
Find what's the difference between 8/9 and 4/7.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (8 x 7), find the product of numerator of Fraction B and denominator of Fraction A (4 x 9), and find the product of both denominators of Fraction A and Fraction B (9 x 7) and rewrite the equation as like the below:
= (8 x 7) - (4 x 9)/(9 x 7)

step 3 Simplify and rewrite the fraction:
= (56 - 36)/63
8/9 - 4/7 = 20/63

Hence,
8/9 minus 4/7 in fraction is 20/63