15/4 - 1/20 as a fraction

Learn how to find what is 15/4 minus 1/20 in fraction form just in a few minutes. We have covered the easiest method to write 15/4 - 1/20 as a fraction and decimal.

Summary: 15/4 minus 1/20 = 37/10
Since both fractions have unequal denominators, 15/4 minus 1/20 is an unlike fractions subtraction. For subtracting unlike fractions, you have to first find the equivalent fractions for fraction 15/4 and fraction 1/20 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 4 and 20. 20 is the LCM of 4 and 20. Multiplying the LCM 20 with the numerators and denominators of both fractions (15/4 x 20/20) - (1/20 x 20/20), and simplify further in order to have the common denominator. So the equivalent fraction for 15/4 is 75/20 and for 1/20 is 1/20. By simplifying this fraction subtraction 75/20 - 1/20, it becomes 74/20.

CALCULATION: 15/4 - 1/20 as a fraction
15/4 - 1/20 = (?)
15/4 - 1/20 = [(15 x 20) - (1 x 4)]/(4 x 20)
= (300 - 4)/80
= 296/80
= (8 x 37)/(8 x 10)
= 37/10
15/4 - 1/20 = 37/10
15/4 minus 1/20 as a fraction is 37/10.

where
15/4 is a improper fraction as a minuend,
1/20 is a proper fraction as a subtrahend,
37/10 is the difference between 15/4 and 1/20.

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15/4 minus 1/20 as a decimal
15/4 - 1/20 = 37/10
37/10 = 3.7
(15/4) - (1/20) as a decimal is 3.7

where
3.7 is the difference between 15/4 and 1/20.

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 1/20 from 15/4. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 15/4 minus 1/20.
1. LCM method
2. Cross multiplication method.

(15/4) - (1/20) using LCM Method:
What is 15/4 minus 1/20 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 15/4
Fraction B: 1/20

What to be found?
(15/4) - (1/20) = ?
Find what's the difference between 15/4 and 1/20.

step 2 Compare the denominators of fractions 15/4 and 1/20 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 15/4 and 1/20 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 15/4 and 1/20:
The LCM of 4 and 20 is 20.

step 4 Write the fractions 15/4 and 1/20 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
= 15/4 - 1/20
= [(15 x 20)/(4 x 20)] - [(1 x 20)/(20 x 20)]

step 5 Simplify the expression to have common denominator:
= 75/20 - 1/20

step 6 Take the common values out and rewrite the above expression like the below:
= 1/20 x (75/1 - 1/1)
= 1/20 x (75 - 1)

step 7Simplify the above expression further:
= 1/20 x 74
= 74/20
= 37/10
15/4 - 1/20 = 37/10

Hence,
15/4 minus 1/20 as a fraction is 37/10.

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15/4 - 1/20 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 15/4
Fraction B: 1/20

What to be found?
(15/4)-(1/20) = ?
Find what's the difference between 15/4 and 1/20.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (15 x 20), find the product of numerator of Fraction B and denominator of Fraction A (1 x 4), and find the product of both denominators of Fraction A and Fraction B (4 x 20) and rewrite the equation as like the below:
= (15 x 20) - (1 x 4)/(4 x 20)

step 3 Simplify and rewrite the fraction:
= (300 - 4)/80
= 296/80
= 37/10
15/4 - 1/20 = 37/10

Hence,
15/4 minus 1/20 in fraction is 37/10