1/7 minus 1/8 as a fraction
1/7 - 1/8 as a fraction provides the detailed information about what is 1/7 minus 1/8 in fraction and decimal form, and the answer with steps to understand how it is being calculated by using different methods.
1/7-1/8 equals to
1/7 - 1/8 = (?)
1/7 - 1/8 = [(1 x 8) - (1 x 7)]/(7 x 8)
= (8 - 7)/56
= 1/56
1/7 - 1/8 = 1/56
1/7 minus 1/8 is equal to 1/56
where
1/7 is a fraction as a minuend,
1/8 is a fraction as a subtrahend,
1/56 is the difference between 1/7 and 1/8.
1/7 minus 1/8 as a decimal
1/7 - 1/8 = 1/56
1/56 = 0.0179
1/7-1/8 as a decimal is 0.0179
where
0.0179 is the difference between 1/7 and 1/8.
How-to: 1/7 - 1/8 = ?
1. LCM method,
2. Cross multiplication method.
Problem and Workout - LCM Method:
What is 1/7 minus 1/8 as a fraction?
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/7
Fraction B: 1/8
What to be found?
1/7-1/8 = ?
Find what's the difference between 1/7 and 1/8.
step 2 Compare the denominators of fractions 1/7 and 1/8 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 1/7 and 1/8 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 1/7 and 1/8:
The LCM of 7 and 8 is 56.
step 4 Write the fractions 1/7 and 1/8 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=1/7-1/8
=(1 x 56)/(7 x 56)-(1 x 56)/(8 x 56)
step 5 Simplify the expression to have common denominator:
=8/56-7/56
step 6 Take the common values out and rewrite the above expression like the below:
=1/56 x (8/1-7/1)
=1/56 x (8 - 7)
step 7Simplify the above expression further:
=1/56 x 1
=1/56
1/7-1/8=1/56
Hence,
1/7 minus 1/8 equals to 1/56 in fraction.
Problem and Workout - Cross Multiplication Method
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/7
Fraction B: 1/8
What to be found?
1/7-1/8 = ?
Find what's the difference between 1/7 and 1/8.
step 2 Find the product of numerator of Fraction A and denominator of Fraction B (1 x 8), find the product of numerator of Fraction B and denominator of Fraction A (1 x 7), and find the product of both denominators of Fraction A and Fraction B (7 x 8) and rewrite the equation as like the below:
= (1 x 8) - (1 x 7)/(7 x 8)
step 3 Simplify and rewrite the fraction:
= (8 - 7)/56
1/7-1/8 = 1/56
Hence,
1/7 minus 1/8 = 1/56
