What is 9/7 minus 4/12 in fraction?
9/7 minus 4/12 equals to 20/21 in fraction form.
Learn how to find what is 9/7 minus 4/12 in fraction form just in a few minutes. We have covered the easiest method to write 9/7 - 4/12 as a fraction and decimal.
Summary: 9/7 minus 4/12
Since both the fractions have the unequal denominators, you have to find the equivalent fractions for 9/7 and 4/12 having identical denominators before starting adding the fractions. Find the LCM of denominators, 84 is the LCM of 7 and 12. Multiply the LCM 84 with all the numerators and denominators of both fractions (9/7 x 84/84) - (4/12 x 84/84) and simplify further in order to have the common denominators. By simplifying the fraction subtraction expression becomes 80/84.
The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 4/12 from 9/7. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 9/7 minus 4/12.
1. LCM method
2. Cross multiplication method.
9/7-4/12 using LCM Method:
What is 9/7 minus 4/12 as a fraction?
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 9/7
Fraction B: 4/12
What to be found?
9/7-4/12 = ?
Find what's the difference between 9/7 and 4/12.
step 2 Compare the denominators of fractions 9/7 and 4/12 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 9/7 and 4/12 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 9/7 and 4/12:
The LCM of 7 and 12 is 84.
step 4 Write the fractions 9/7 and 4/12 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=9/7-4/12
=(9 x 84)/(7 x 84)-(4 x 84)/(12 x 84)
step 5 Simplify the expression to have common denominator:
=108/84-28/84
step 6 Take the common values out and rewrite the above expression like the below:
=1/84 x (108/1-28/1)
=1/84 x (108 - 28)
step 7Simplify the above expression further:
=1/84 x 80
= 80/84
=20/21
9/7-4/12=20/21
Hence,
9/7 minus 4/12 equals to 20/21 in fraction.
9/7-4/12 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 9/7
Fraction B: 4/12
What to be found?
9/7-4/12 = ?
Find what's the difference between 9/7 and 4/12.
step 2 Find the product of numerator of Fraction A and denominator of Fraction B (9 x 12), find the product of numerator of Fraction B and denominator of Fraction A (4 x 7), and find the product of both denominators of Fraction A and Fraction B (7 x 12) and rewrite the equation as like the below:
= (9 x 12) - (4 x 7)/(7 x 12)
step 3 Simplify and rewrite the fraction:
= (108 - 28)/84
= 80/84
= 20/21
9/7-4/12 = 20/21
Hence,
9/7 minus 4/12 = 20/21