9/8 - 9 as a fraction

Learn how to find what is 9/8 minus 9 in fraction form just in a few minutes. We have covered the easiest method to write 9/8 - 9 as a fraction and decimal.

Summary: 9/8 minus 9 = -63/8
Since both fractions have unequal denominators, 9/8 minus 9 is an unlike fractions subtraction. For subtracting unlike fractions, you have to first find the equivalent fractions for fraction 9/8 and fraction 9 in order to have the same denominators for both fractions. Therefore, you have to find the LCM of denominators 8 and 1. 8 is the LCM of 8 and 1. Multiplying the LCM 8 with the numerators and denominators of both fractions (9/8 x 8/8) - (9 x 8/8), and simplify further in order to have the common denominator. So the equivalent fraction for 9/8 is 9/8 and for 9 is 72/8. By simplifying this fraction subtraction 9/8 - 72/8, it becomes -63/8.

CALCULATION: 9/8 - 9 as a fraction
9/8 - 9 = (?)
9/8 - 9/1 = [(9 x 1) - (9 x 8)]/(8 x 1)
= (9 - 72)/8
= -63/8
9/8 - 9 = -63/8
9/8 minus 9 as a fraction is -63/8.

where
9/8 is a improper fraction as a minuend,
9 is a whole number as a subtrahend,
-63/8 is the difference between 9/8 and 9.

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9/8 minus 9 as a decimal
9/8 - 9 = -63/8
-63/8 = -7.875
(9/8) - (9) as a decimal is -7.875

where
-7.875 is the difference between 9/8 and 9.

The below workout with step by step calculation shows how to find the difference between fraction and a whole number by subtracting 9 from 9/8. use any one of the following methods to find the equivalent fraction for 9/8 minus 9.
1. LCM method
2. Cross multiplication method.

(9/8) - (9) using LCM Method:
What is 9/8 minus 9 as a fraction?

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

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

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

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

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

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

step 7Simplify the above expression further:
= 1/8 x -63
= -63/8
9/8 - 9 = -63/8

Hence,
9/8 minus 9 as a fraction is -63/8.

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

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

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

step 3 Simplify and rewrite the fraction:
= (9 - 72)/8
9/8 - 9 = -63/8

Hence,
9/8 minus 9 in fraction is -63/8