Subtract 50/30 from 4/7
1st number: 4/7, 2nd number: 1 20/30
4/7 - 50/30 is -23/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
4/7 = 4 × 30/7 × 30 = 120/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
50/30 = 50 × 7/30 × 7 = 350/210 - Subtract the two like fractions:
120/210 - 350/210 = 120 - 350/210 = -230/210 - After reducing the fraction, the answer is -23/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7-50/30 4/14-50/30 4/7-50/60 12/7-50/30 4/21-50/30 4/7-50/90 20/7-50/30 4/35-50/30 28/7-50/30 4/49-50/30