Subtract 60/4 from 30/42
1st number: 30/42, 2nd number: 15 0/4
30/42 - 60/4 is -100/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
30/42 = 30 × 2/42 × 2 = 60/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
60/4 = 60 × 21/4 × 21 = 1260/84 - Subtract the two like fractions:
60/84 - 1260/84 = 60 - 1260/84 = -1200/84 - After reducing the fraction, the answer is -100/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42-60/4 30/84-60/4 30/42-60/8 90/42-60/4 30/42-60/12 30/42-60/20 30/42-60/28