What is 1/5 minus 5/4 in fraction?
1/5 minus 5/4 equals to -21/20 in fraction form.
Learn how to find what is 1/5 minus 5/4 in fraction form just in a few minutes. We have covered the easiest method to write 1/5 - 5/4 as a fraction and decimal.
Summary: 1/5 minus 5/4
Since both the fractions have the unequal denominators, you have to find the equivalent fractions for 1/5 and 5/4 having identical denominators before starting adding the fractions. Find the LCM of denominators, 20 is the LCM of 5 and 4. Multiply the LCM 20 with all the numerators and denominators of both fractions (1/5 x 20/20) - (5/4 x 20/20) and simplify further in order to have the common denominators. By simplifying the fraction subtraction expression becomes -21/20.
The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 5/4 from 1/5. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 1/5 minus 5/4.
1. LCM method
2. Cross multiplication method.
1/5-5/4 using LCM Method:
What is 1/5 minus 5/4 as a fraction?
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/5
Fraction B: 5/4
What to be found?
1/5-5/4 = ?
Find what's the difference between 1/5 and 5/4.
step 2 Compare the denominators of fractions 1/5 and 5/4 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 1/5 and 5/4 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 1/5 and 5/4:
The LCM of 5 and 4 is 20.
step 4 Write the fractions 1/5 and 5/4 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=1/5-5/4
=(1 x 20)/(5 x 20)-(5 x 20)/(4 x 20)
step 5 Simplify the expression to have common denominator:
=4/20-25/20
step 6 Take the common values out and rewrite the above expression like the below:
=1/20 x (4/1-25/1)
=1/20 x (4 - 25)
step 7Simplify the above expression further:
=1/20 x -21
=-21/20
1/5-5/4=-21/20
Hence,
1/5 minus 5/4 equals to -21/20 in fraction.
1/5-5/4 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/5
Fraction B: 5/4
What to be found?
1/5-5/4 = ?
Find what's the difference between 1/5 and 5/4.
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 (5 x 5), and find the product of both denominators of Fraction A and Fraction B (5 x 4) and rewrite the equation as like the below:
= (1 x 4) - (5 x 5)/(5 x 4)
step 3 Simplify and rewrite the fraction:
= (4 - 25)/20
1/5-5/4 = -21/20
Hence,
1/5 minus 5/4 = -21/20