Subtract 60/63 from 30/84
30/84 - 60/63 is -25/42.
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,
30/84 = 30 × 3/84 × 3 = 90/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
60/63 = 60 × 4/63 × 4 = 240/252 - Subtract the two like fractions:
90/252 - 240/252 = 90 - 240/252 = -150/252 - After reducing the fraction, the answer is -25/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84-60/63 90/84-60/63