What is 2/8 minus 4/7 in fraction?
2/8 minus 4/7 equals to -9/28 in fraction form.
Learn how to find what is 2/8 minus 4/7 in fraction form just in a few minutes. We have covered the easiest method to write 2/8 - 4/7 as a fraction and decimal.
Summary: 2/8 minus 4/7
Since both the fractions have the unequal denominators, you have to find the equivalent fractions for 2/8 and 4/7 having identical denominators before starting adding the fractions. Find the LCM of denominators, 56 is the LCM of 8 and 7. Multiply the LCM 56 with all the numerators and denominators of both fractions (2/8 x 56/56) - (4/7 x 56/56) and simplify further in order to have the common denominators. By simplifying the fraction subtraction expression becomes -18/56.
The below workout with step by step calculation shows how to find what is the difference between two fractions by subtracting a fraction 4/7 from 2/8. For different, unequal or unlike denominators, use any one of the following methods to find the equivalent fraction for 2/8 minus 4/7.
1. LCM method
2. Cross multiplication method.
2/8-4/7 using LCM Method:
What is 2/8 minus 4/7 as a fraction?
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 2/8
Fraction B: 4/7
What to be found?
2/8-4/7 = ?
Find what's the difference between 2/8 and 4/7.
step 2 Compare the denominators of fractions 2/8 and 4/7 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 2/8 and 4/7 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 2/8 and 4/7:
The LCM of 8 and 7 is 56.
step 4 Write the fractions 2/8 and 4/7 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=2/8-4/7
=(2 x 56)/(8 x 56)-(4 x 56)/(7 x 56)
step 5 Simplify the expression to have common denominator:
=14/56-32/56
step 6 Take the common values out and rewrite the above expression like the below:
=1/56 x (14/1-32/1)
=1/56 x (14 - 32)
step 7Simplify the above expression further:
=1/56 x -18
= -18/56
=-9/28
2/8-4/7=-9/28
Hence,
2/8 minus 4/7 equals to -9/28 in fraction.
2/8-4/7 using Cross Multiplication Method:
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 2/8
Fraction B: 4/7
What to be found?
2/8-4/7 = ?
Find what's the difference between 2/8 and 4/7.
step 2 Find the product of numerator of Fraction A and denominator of Fraction B (2 x 7), find the product of numerator of Fraction B and denominator of Fraction A (4 x 8), and find the product of both denominators of Fraction A and Fraction B (8 x 7) and rewrite the equation as like the below:
= (2 x 7) - (4 x 8)/(8 x 7)
step 3 Simplify and rewrite the fraction:
= (14 - 32)/56
= -18/56
= -9/28
2/8-4/7 = -9/28
Hence,
2/8 minus 4/7 = -9/28