Subtract 54/80 from 9/28
9/28 - 54/80 is -99/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
9/28 = 9 × 20/28 × 20 = 180/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
54/80 = 54 × 7/80 × 7 = 378/560 - Subtract the two like fractions:
180/560 - 378/560 = 180 - 378/560 = -198/560 - After reducing the fraction, the answer is -99/280
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