1/8 - 3/4 as a fraction

Learn how to find what is 1/8 minus 3/4 in fraction form just in a few minutes. We have covered the easiest method to write 1/8 - 3/4 as a fraction and decimal.

Summary: 1/8 minus 3/4 = -5/8
Since both fractions have unequal denominators, 1/8 minus 3/4 is an unlike fractions subtraction. For subtracting unlike fractions, you have to first find the equivalent fractions for fraction 1/8 and fraction 3/4 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 8 and 4. 8 is the LCM of 8 and 4. Multiplying the LCM 8 with the numerators and denominators of both fractions (1/8 x 8/8) - (3/4 x 8/8), and simplify further in order to have the common denominator. So the equivalent fraction for 1/8 is 1/8 and for 3/4 is 6/8. By simplifying this fraction subtraction 1/8 - 6/8, it becomes -5/8.

CALCULATION: 1/8 - 3/4 as a fraction
1/8 - 3/4 = (?)
1/8 - 3/4 = [(1 x 4) - (3 x 8)]/(8 x 4)
= (4 - 24)/32
= -20/32
= (4 x -5)/(4 x 8)
= -5/8
1/8 - 3/4 = -5/8
1/8 minus 3/4 as a fraction is -5/8.

where
1/8 is a proper fraction as a minuend,
3/4 is a proper fraction as a subtrahend,
-5/8 is the difference between 1/8 and 3/4.

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1/8 minus 3/4 as a decimal
1/8 - 3/4 = -5/8
-5/8 = -0.625
(1/8) - (3/4) as a decimal is -0.625

where
-0.625 is the difference between 1/8 and 3/4.

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 3/4 from 1/8. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 1/8 minus 3/4.
1. LCM method
2. Cross multiplication method.

(1/8) - (3/4) using LCM Method:
What is 1/8 minus 3/4 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/8
Fraction B: 3/4

What to be found?
(1/8) - (3/4) = ?
Find what's the difference between 1/8 and 3/4.

step 2 Compare the denominators of fractions 1/8 and 3/4 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 1/8 and 3/4 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 1/8 and 3/4:
The LCM of 8 and 4 is 8.

step 4 Write the fractions 1/8 and 3/4 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
= 1/8 - 3/4
= [(1 x 8)/(8 x 8)] - [(3 x 8)/(4 x 8)]

step 5 Simplify the expression to have common denominator:
= 1/8 - 6/8

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

step 7Simplify the above expression further:
= 1/8 x -5
= -5/8
1/8 - 3/4 = -5/8

Hence,
1/8 minus 3/4 as a fraction is -5/8.

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1/8 - 3/4 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/8
Fraction B: 3/4

What to be found?
(1/8)-(3/4) = ?
Find what's the difference between 1/8 and 3/4.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (1 x 4), find the product of numerator of Fraction B and denominator of Fraction A (3 x 8), and find the product of both denominators of Fraction A and Fraction B (8 x 4) and rewrite the equation as like the below:
= (1 x 4) - (3 x 8)/(8 x 4)

step 3 Simplify and rewrite the fraction:
= (4 - 24)/32
= -20/32
= -5/8
1/8 - 3/4 = -5/8

Hence,
1/8 minus 3/4 in fraction is -5/8