What is 3/7 minus 2/4 in fraction?
3/7 minus 2/4 equals to -1/14 in fraction form.
Learn how to find what is 3/7 minus 2/4 in fraction form just in a few minutes. We have covered the easiest method to write 3/7 - 2/4 as a fraction and decimal.
Summary: 3/7 minus 2/4
Since both the fractions have the unequal denominators, you have to find the equivalent fractions for 3/7 and 2/4 having identical denominators before starting adding the fractions. Find the LCM of denominators, 28 is the LCM of 7 and 4. Multiply the LCM 28 with all the numerators and denominators of both fractions (3/7 x 28/28) - (2/4 x 28/28) and simplify further in order to have the common denominators. By simplifying the fraction subtraction expression becomes -2/28.
The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 2/4 from 3/7. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 3/7 minus 2/4.
1. LCM method
2. Cross multiplication method.
3/7-2/4 using LCM Method:
What is 3/7 minus 2/4 as a fraction?
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 3/7
Fraction B: 2/4
What to be found?
3/7-2/4 = ?
Find what's the difference between 3/7 and 2/4.
step 2 Compare the denominators of fractions 3/7 and 2/4 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 3/7 and 2/4 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 3/7 and 2/4:
The LCM of 7 and 4 is 28.
step 4 Write the fractions 3/7 and 2/4 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=3/7-2/4
=(3 x 28)/(7 x 28)-(2 x 28)/(4 x 28)
step 5 Simplify the expression to have common denominator:
=12/28-14/28
step 6 Take the common values out and rewrite the above expression like the below:
=1/28 x (12/1-14/1)
=1/28 x (12 - 14)
step 7Simplify the above expression further:
=1/28 x -2
= -2/28
=-1/14
3/7-2/4=-1/14
Hence,
3/7 minus 2/4 equals to -1/14 in fraction.
3/7-2/4 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 3/7
Fraction B: 2/4
What to be found?
3/7-2/4 = ?
Find what's the difference between 3/7 and 2/4.
step 2 Find the product of numerator of Fraction A and denominator of Fraction B (3 x 4), find the product of numerator of Fraction B and denominator of Fraction A (2 x 7), and find the product of both denominators of Fraction A and Fraction B (7 x 4) and rewrite the equation as like the below:
= (3 x 4) - (2 x 7)/(7 x 4)
step 3 Simplify and rewrite the fraction:
= (12 - 14)/28
= -2/28
= -1/14
3/7-2/4 = -1/14
Hence,
3/7 minus 2/4 = -1/14