Subtract 70/81 from 54/63
54/63 - 70/81 is -4/567.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 63 × 9 = 567,
54/63 = 54 × 9/63 × 9 = 486/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
70/81 = 70 × 7/81 × 7 = 490/567 - Subtract the two like fractions:
486/567 - 490/567 = 486 - 490/567 = -4/567
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