Subtract 50/49 from 30/42
1st number: 30/42, 2nd number: 1 1/49
30/42 - 50/49 is -15/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 49 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 42 × 7 = 294,
30/42 = 30 × 7/42 × 7 = 210/294 - Likewise, for the 2nd fraction, since 49 × 6 = 294,
50/49 = 50 × 6/49 × 6 = 300/294 - Subtract the two like fractions:
210/294 - 300/294 = 210 - 300/294 = -90/294 - After reducing the fraction, the answer is -15/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/42-50/49 30/84-50/49 30/42-50/98 90/42-50/49