Subtract 18/63 from 9/84
9/84 - 18/63 is -5/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
9/84 = 9 × 3/84 × 3 = 27/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
18/63 = 18 × 4/63 × 4 = 72/252 - Subtract the two like fractions:
27/252 - 72/252 = 27 - 72/252 = -45/252 - After reducing the fraction, the answer is -5/28
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