Subtract 9/10 from 54/84
54/84 - 9/10 is -9/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
54/84 = 54 × 5/84 × 5 = 270/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
9/10 = 9 × 42/10 × 42 = 378/420 - Subtract the two like fractions:
270/420 - 378/420 = 270 - 378/420 = -108/420 - After reducing the fraction, the answer is -9/35
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