# 1/8 minus 1/9 as a fraction 1/8 - 1/9 as a fraction provides the detailed information about what is 1/8 minus 1/9 in fraction and decimal form, and the answer with steps to understand how it is being calculated by using different methods.

1/8-1/9 equals to
1/8 - 1/9 = (?)
1/8 - 1/9 = [(1 x 9) - (1 x 8)]/(8 x 9)
= (9 - 8)/72
= 1/72
1/8 - 1/9 = 1/72
1/8 minus 1/9 is equal to 1/72

where
1/8 is a fraction as a minuend,
1/9 is a fraction as a subtrahend,
1/72 is the difference between 1/8 and 1/9.

1/8 minus 1/9 as a decimal
1/8 - 1/9 = 1/72
1/72 = 0.0139
1/8-1/9 as a decimal is 0.0139
where
0.0139 is the difference between 1/8 and 1/9.

For values other than 1/8 minus 1/9, use this below tool:

## How-to: 1/8 - 1/9 = ?

The below workout with step by step calculation shows how to find what is 1/8 minus 1/9 in simplest form by using the following methods:
1. LCM method,
2. Cross multiplication method.

Problem and Workout - LCM Method:
What is 1/8 minus 1/9 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/8
Fraction B: 1/9

What to be found?
1/8-1/9 = ?
Find what's the difference between 1/8 and 1/9.

step 2 Compare the denominators of fractions 1/8 and 1/9 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 1/8 and 1/9 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 1/9:
The LCM of 8 and 9 is 72.

step 4 Write the fractions 1/8 and 1/9 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=1/8-1/9
=(1 x 72)/(8 x 72)-(1 x 72)/(9 x 72)

step 5 Simplify the expression to have common denominator:
=9/72-8/72

step 6 Take the common values out and rewrite the above expression like the below:
=1/72 x (9/1-8/1)
=1/72 x (9 - 8)

step 7Simplify the above expression further:
=1/72 x 1
=1/72
1/8-1/9=1/72

Hence,
1/8 minus 1/9 equals to 1/72 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: 1/9

What to be found?
1/8-1/9 = ?
Find what's the difference between 1/8 and 1/9.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (1 x 9), find the product of numerator of Fraction B and denominator of Fraction A (1 x 8), and find the product of both denominators of Fraction A and Fraction B (8 x 9) and rewrite the equation as like the below:
= (1 x 9) - (1 x 8)/(8 x 9)

step 3 Simplify and rewrite the fraction:
= (9 - 8)/72
1/8-1/9 = 1/72
Hence,
1/8 minus 1/9 = 1/72 