Subtract 84/63 from 8/54
1st number: 8/54, 2nd number: 1 21/63
8/54 - 84/63 is -32/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 63 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
8/54 = 8 × 7/54 × 7 = 56/378 - Likewise, for the 2nd fraction, since 63 × 6 = 378,
84/63 = 84 × 6/63 × 6 = 504/378 - Subtract the two like fractions:
56/378 - 504/378 = 56 - 504/378 = -448/378 - After reducing the fraction, the answer is -32/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/54-84/63 24/54-84/63 40/54-84/63 56/54-84/63