1/8 minus 4/5 as a fraction
1/8 - 4/5 as a fraction provides the detailed information about what is 1/8 minus 4/5 in fraction and decimal form, and the answer with steps to understand how it is being calculated by using different methods.
1/8-4/5 equals to
1/8 - 4/5 = (?)
1/8 - 4/5 = [(1 x 5) - (4 x 8)]/(8 x 5)
= (5 - 32)/40
= -27/40
1/8 - 4/5 = -27/40
1/8 minus 4/5 is equal to -27/40
where
1/8 is a fraction as a minuend,
4/5 is a fraction as a subtrahend,
-27/40 is the difference between 1/8 and 4/5.
1/8 minus 4/5 as a decimal
1/8 - 4/5 = -27/40
-27/40 = -0.675
1/8-4/5 as a decimal is -0.675
where
-0.675 is the difference between 1/8 and 4/5.
How-to: 1/8 - 4/5 = ?
1. LCM method,
2. Cross multiplication method.
Problem and Workout - LCM Method:
What is 1/8 minus 4/5 as a fraction?
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/8
Fraction B: 4/5
What to be found?
1/8-4/5 = ?
Find what's the difference between 1/8 and 4/5.
step 2 Compare the denominators of fractions 1/8 and 4/5 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 1/8 and 4/5 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 1/8 and 4/5:
The LCM of 8 and 5 is 40.
step 4 Write the fractions 1/8 and 4/5 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=1/8-4/5
=(1 x 40)/(8 x 40)-(4 x 40)/(5 x 40)
step 5 Simplify the expression to have common denominator:
=5/40-32/40
step 6 Take the common values out and rewrite the above expression like the below:
=1/40 x (5/1-32/1)
=1/40 x (5 - 32)
step 7Simplify the above expression further:
=1/40 x -27
=-27/40
1/8-4/5=-27/40
Hence,
1/8 minus 4/5 equals to -27/40 in fraction.
Problem and Workout - Cross Multiplication Method
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/8
Fraction B: 4/5
What to be found?
1/8-4/5 = ?
Find what's the difference between 1/8 and 4/5.
step 2 Find the product of numerator of Fraction A and denominator of Fraction B (1 x 5), 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 5) and rewrite the equation as like the below:
= (1 x 5) - (4 x 8)/(8 x 5)
step 3 Simplify and rewrite the fraction:
= (5 - 32)/40
1/8-4/5 = -27/40
Hence,
1/8 minus 4/5 = -27/40
