# 1/9 minus 1/7 as a fraction 1/9 - 1/7 as a fraction provides the detailed information about what is 1/9 minus 1/7 in fraction and decimal form, and the answer with steps to understand how it is being calculated by using different methods.

1/9-1/7 equals to
1/9 - 1/7 = (?)
1/9 - 1/7 = [(1 x 7) - (1 x 9)]/(9 x 7)
= (7 - 9)/63
= -2/63
1/9 - 1/7 = -2/63
1/9 minus 1/7 is equal to -2/63

where
1/9 is a fraction as a minuend,
1/7 is a fraction as a subtrahend,
-2/63 is the difference between 1/9 and 1/7.

1/9 minus 1/7 as a decimal
1/9 - 1/7 = -2/63
-2/63 = -0.0317
1/9-1/7 as a decimal is -0.0317
where
-0.0317 is the difference between 1/9 and 1/7.

For values other than 1/9 minus 1/7, use this below tool:

## How-to: 1/9 - 1/7 = ?

The below workout with step by step calculation shows how to find what is 1/9 minus 1/7 in simplest form by using the following methods:
1. LCM method,
2. Cross multiplication method.

Problem and Workout - LCM Method:
What is 1/9 minus 1/7 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/9
Fraction B: 1/7

What to be found?
1/9-1/7 = ?
Find what's the difference between 1/9 and 1/7.

step 2 Compare the denominators of fractions 1/9 and 1/7 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 1/9 and 1/7 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 1/9 and 1/7:
The LCM of 9 and 7 is 63.

step 4 Write the fractions 1/9 and 1/7 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=1/9-1/7
=(1 x 63)/(9 x 63)-(1 x 63)/(7 x 63)

step 5 Simplify the expression to have common denominator:
=7/63-9/63

step 6 Take the common values out and rewrite the above expression like the below:
=1/63 x (7/1-9/1)
=1/63 x (7 - 9)

step 7Simplify the above expression further:
=1/63 x -2
=-2/63
1/9-1/7=-2/63

Hence,
1/9 minus 1/7 equals to -2/63 in fraction.

Problem and Workout - Cross Multiplication Method
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 1/9
Fraction B: 1/7

What to be found?
1/9-1/7 = ?
Find what's the difference between 1/9 and 1/7.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (1 x 7), find the product of numerator of Fraction B and denominator of Fraction A (1 x 9), and find the product of both denominators of Fraction A and Fraction B (9 x 7) and rewrite the equation as like the below:
= (1 x 7) - (1 x 9)/(9 x 7)

step 3 Simplify and rewrite the fraction:
= (7 - 9)/63
1/9-1/7 = -2/63
Hence,
1/9 minus 1/7 = -2/63 