# 9/10 minus 7/8 as a fraction 9/10 - 7/8 as a fraction provides the detailed information about what is 9/10 minus 7/8 in fraction and decimal form, and the answer with steps to understand how it is being calculated by using different methods.

9/10-7/8 equals to
9/10 - 7/8 = (?)
9/10 - 7/8 = [(9 x 8) - (7 x 10)]/(10 x 8)
= (72 - 70)/80
= 2/80
= (2 x 1)/(2 x 40)
= 1/40
9/10 - 7/8 = 1/40
9/10 minus 7/8 is equal to 1/40

where
9/10 is a fraction as a minuend,
7/8 is a fraction as a subtrahend,
1/40 is the difference between 9/10 and 7/8.

9/10 minus 7/8 as a decimal
9/10 - 7/8 = 1/40
1/40 = 0.025
9/10-7/8 as a decimal is 0.025
where
0.025 is the difference between 9/10 and 7/8.

For values other than 9/10 minus 7/8, use this below tool:

## How-to: 9/10 - 7/8 = ?

The below workout with step by step calculation shows how to find what is 9/10 minus 7/8 in simplest form by using the following methods:
1. LCM method,
2. Cross multiplication method.

Problem and Workout - LCM Method:
What is 9/10 minus 7/8 as a fraction?

step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 9/10
Fraction B: 7/8

What to be found?
9/10-7/8 = ?
Find what's the difference between 9/10 and 7/8.

step 2 Compare the denominators of fractions 9/10 and 7/8 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 9/10 and 7/8 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 9/10 and 7/8:
The LCM of 10 and 8 is 40.

step 4 Write the fractions 9/10 and 7/8 in the subtraction expression form and multiply LCM with all the numerators and denominators of both fractions.
=9/10-7/8
=(9 x 40)/(10 x 40)-(7 x 40)/(8 x 40)

step 5 Simplify the expression to have common denominator:
=36/40-35/40

step 6 Take the common values out and rewrite the above expression like the below:
=1/40 x (36/1-35/1)
=1/40 x (36 - 35)

step 7Simplify the above expression further:
=1/40 x 1
=1/40
9/10-7/8=1/40

Hence,
9/10 minus 7/8 equals to 1/40 in fraction.

Problem and Workout - Cross Multiplication Method
step 1 Observe the input parameters and what to be found:
Input:
Fraction A: 9/10
Fraction B: 7/8

What to be found?
9/10-7/8 = ?
Find what's the difference between 9/10 and 7/8.

step 2 Find the product of numerator of Fraction A and denominator of Fraction B (9 x 8), find the product of numerator of Fraction B and denominator of Fraction A (7 x 10), and find the product of both denominators of Fraction A and Fraction B (10 x 8) and rewrite the equation as like the below:
= (9 x 8) - (7 x 10)/(10 x 8)

step 3 Simplify and rewrite the fraction:
= (72 - 70)/80
= 2/80
= 1/40
9/10-7/8 = 1/40
Hence,
9/10 minus 7/8 = 1/40 