Subtract 48/21 from 1/30
1st number: 1/30, 2nd number: 2 6/21
1/30 - 48/21 is -473/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
1/30 = 1 × 7/30 × 7 = 7/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
48/21 = 48 × 10/21 × 10 = 480/210 - Subtract the two like fractions:
7/210 - 480/210 = 7 - 480/210 = -473/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/30-48/21 1/30-96/21 1/60-48/21 1/30-48/42 3/30-48/21 1/90-48/21 1/30-48/63 5/30-48/21 7/30-48/21