12 - 3/20 as a fraction

Learn how to find what is 12 minus 3/20 in fraction form just in a few minutes. We have covered the easiest method to write 12 - 3/20 as a fraction and decimal.

Summary: 12 minus 3/20 = 237/20
Since both fractions have unequal denominators, 12 minus 3/20 is an unlike fractions subtraction. For subtracting unlike fractions, you have to first find the equivalent fractions for fraction 12 and fraction 3/20 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 1 and 20. 20 is the LCM of 1 and 20. Multiplying the LCM 20 with the numerators and denominators of both fractions (12 x 20/20) - (3/20 x 20/20), and simplify further in order to have the common denominator. So the equivalent fraction for 12 is 240/20 and for 3/20 is 3/20. By simplifying this fraction subtraction 240/20 - 3/20, it becomes 237/20.

CALCULATION: 12 - 3/20 as a fraction
12 - 3/20 = (?)
12/1 - 3/20 = [(12 x 20) - (3 x 1)]/(1 x 20)
= (240 - 3)/20
= 237/20
12 - 3/20 = 237/20
12 minus 3/20 as a fraction is 237/20.

where
12 is a whole number as a minuend,
3/20 is a proper fraction as a subtrahend,
237/20 is the difference between 12 and 3/20.

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12 minus 3/20 as a decimal
12 - 3/20 = 237/20
237/20 = 11.85
(12) - (3/20) as a decimal is 11.85

where
11.85 is the difference between 12 and 3/20.

The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 3/20 from 12. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 12 minus 3/20.
1. LCM method
2. Cross multiplication method.

(12) - (3/20) using LCM Method:
What is 12 minus 3/20 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 12/1
Fraction B: 3/20

What to be found?
(12) - (3/20) = ?
Find what's the difference between 12 and 3/20.

step 2 Compare the denominators of fractions 12 and 3/20 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 12 and 3/20 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 12 and 3/20:
The LCM of 1 and 20 is 20.

step 4 Write the fractions 12 and 3/20 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
= 12 - 3/20
= [(12 x 20)/(1 x 20)] - [(3 x 20)/(20 x 20)]

step 5 Simplify the expression to have common denominator:
= 240/20 - 3/20

step 6 Take the common values out and rewrite the above expression like the below:
= 1/20 x (240/1 - 3/1)
= 1/20 x (240 - 3)

step 7Simplify the above expression further:
= 1/20 x 237
= 237/20
12 - 3/20 = 237/20

Hence,
12 minus 3/20 as a fraction is 237/20.

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12 - 3/20 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 12/1
Fraction B: 3/20

What to be found?
(12)-(3/20) = ?
Find what's the difference between 12 and 3/20.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (12 x 20), find the product of numerator of Fraction B and denominator of Fraction A (3 x 1), and find the product of both denominators of Fraction A and Fraction B (1 x 20) and rewrite the equation as like the below:
= (12 x 20) - (3 x 1)/(1 x 20)

step 3 Simplify and rewrite the fraction:
= (240 - 3)/20
12 - 3/20 = 237/20

Hence,
12 minus 3/20 in fraction is 237/20