1/8 - 7/15 as a fraction

Learn how to find what is 1/8 minus 7/15 in fraction form just in a few minutes. We have covered the easiest method to write 1/8 - 7/15 as a fraction and decimal.

Summary: 1/8 minus 7/15 = -41/120
Since both fractions have unequal denominators, 1/8 minus 7/15 is an unlike fractions subtraction. For subtracting unlike fractions, you have to first find the equivalent fractions for fraction 1/8 and fraction 7/15 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 8 and 15. 120 is the LCM of 8 and 15. Multiplying the LCM 120 with the numerators and denominators of both fractions (1/8 x 120/120) - (7/15 x 120/120), and simplify further in order to have the common denominator. So the equivalent fraction for 1/8 is 15/120 and for 7/15 is 56/120. By simplifying this fraction subtraction 15/120 - 56/120, it becomes -41/120.

CALCULATION: 1/8 - 7/15 as a fraction
1/8 - 7/15 = (?)
1/8 - 7/15 = [(1 x 15) - (7 x 8)]/(8 x 15)
= (15 - 56)/120
= -41/120
1/8 - 7/15 = -41/120
1/8 minus 7/15 as a fraction is -41/120.

where
1/8 is a proper fraction as a minuend,
7/15 is a proper fraction as a subtrahend,
-41/120 is the difference between 1/8 and 7/15.

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1/8 minus 7/15 as a decimal
1/8 - 7/15 = -41/120
-41/120 = -0.3417
(1/8) - (7/15) as a decimal is -0.3417

where
-0.3417 is the difference between 1/8 and 7/15.

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 7/15 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 7/15.
1. LCM method
2. Cross multiplication method.

(1/8) - (7/15) using LCM Method:
What is 1/8 minus 7/15 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/8
Fraction B: 7/15

What to be found?
(1/8) - (7/15) = ?
Find what's the difference between 1/8 and 7/15.

step 2 Compare the denominators of fractions 1/8 and 7/15 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 1/8 and 7/15 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 7/15:
The LCM of 8 and 15 is 120.

step 4 Write the fractions 1/8 and 7/15 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
= 1/8 - 7/15
= [(1 x 120)/(8 x 120)] - [(7 x 120)/(15 x 120)]

step 5 Simplify the expression to have common denominator:
= 15/120 - 56/120

step 6 Take the common values out and rewrite the above expression like the below:
= 1/120 x (15/1 - 56/1)
= 1/120 x (15 - 56)

step 7Simplify the above expression further:
= 1/120 x -41
= -41/120
1/8 - 7/15 = -41/120

Hence,
1/8 minus 7/15 as a fraction is -41/120.

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1/8 - 7/15 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/8
Fraction B: 7/15

What to be found?
(1/8)-(7/15) = ?
Find what's the difference between 1/8 and 7/15.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (1 x 15), find the product of numerator of Fraction B and denominator of Fraction A (7 x 8), and find the product of both denominators of Fraction A and Fraction B (8 x 15) and rewrite the equation as like the below:
= (1 x 15) - (7 x 8)/(8 x 15)

step 3 Simplify and rewrite the fraction:
= (15 - 56)/120
1/8 - 7/15 = -41/120

Hence,
1/8 minus 7/15 in fraction is -41/120