Calculators & Converters

    What is 9/4 minus 9/8?

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    9/4 - 9/8 as a fraction provides the detailed information about what is the difference between 9/4 and 9/8 in fraction and decimal form, and the answer with steps to understand how it is being calculated by using different methods.

    9/4-9/8 equals to
    9/4 - 9/8 = 9/8
    Hence, 9/4 - 9/8 is equal to 9/8.
    where
    9/4 is a fraction as a minuend,
    9/8 is a fraction as a subtrahend,
    9/8 is the difference between 9/4 and 9/8.

    9/4 minus 9/8 as a decimal
    9/4 - 9/8 = 9/8
    9/8 = 1.125
    Hence, 9/4-9/8 can be written as 1.125 in decimal.
    where
    1.125 is the difference between 9/4 and 9/8.

    For values other than 9/4 minus 9/8, use this below tool:

    How-to: 9/4 - 9/8 = ?

    The below workout with step by step calculation for subtracting 9/4 from 9/8 shows how to find what is the difference between 9/4 and 9/8. The difference of fractions 9/4 minus 9/8 can be obtained by using anyone of the two methods below:
    1. LCM method,
    2. Cross multiplication method.

    Problem and Workout - LCM Method:
    What is 9/4 minus 9/8 as a fraction?

    step 1 Observe the input parameters and what to be found:
    Input:
    Fraction A: 9/4
    Fraction B: 9/8

    What to be found?
    9/4-9/8 = ?
    Find what's the difference between 9/4 and 9/8.


    step 2 Compare the denominators of fractions 9/4 and 9/8 to identify whether it is a like or unlike fraction subtraction. Since the denominators of given fractions 9/4 and 9/8 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 9/4 and 9/8:
    The LCM of 4 and 8 is 8.


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


    step 5 Simplify the expression to have common denominator:
    =18/8-9/8


    step 6 Take the common values out and rewrite the above expression like the below:
    =1/8 x (18/1-9/1)
    =1/8 x (18 - 9)


    step 7Simplify the above expression further:
    =1/8 x 9
    =9/8
    9/4-9/8=9/8

    Hence,
    9/4 minus 9/8 equals to 9/8 in fraction.



    Problem and Workout - Cross Multiplication Method
    step 1 Observe the input parameters and what to be found:
    Input:
    Fraction A: 9/4
    Fraction B: 9/8

    What to be found?
    9/4-9/8 = ?
    Find what's the difference between 9/4 and 9/8.

    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 (9 x 4), and find the product of both denominators of Fraction A and Fraction B (4 x 8) and rewrite the equation as like the below:
    = (9 x 8) - (9 x 4)/(4 x 8)

    step 3 Simplify and rewrite the fraction:
    = (72 - 36)/32
    = 36/32
    = 9/8
    9/4-9/8 = 9/8
    Hence,
    9/4 minus 9/8 = 9/8

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