Subtract 90/63 from 84/54
1st number: 1 30/54, 2nd number: 1 27/63
84/54 - 90/63 is 8/63.
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,
84/54 = 84 × 7/54 × 7 = 588/378 - Likewise, for the 2nd fraction, since 63 × 6 = 378,
90/63 = 90 × 6/63 × 6 = 540/378 - Subtract the two like fractions:
588/378 - 540/378 = 588 - 540/378 = 48/378 - After reducing the fraction, the answer is 8/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: