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    9/10 minus 7/8 as a fraction

    Fraction Subtraction Calculator

    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

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