Subtract 9/70 from 50/30
1st number: 1 20/30, 2nd number: 9/70
50/30 - 9/70 is 323/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
50/30 = 50 × 7/30 × 7 = 350/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
9/70 = 9 × 3/70 × 3 = 27/210 - Subtract the two like fractions:
350/210 - 27/210 = 350 - 27/210 = 323/210 - In mixed form: 1113/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30-18/70 50/60-9/70 50/30-27/70 50/90-9/70 50/30-45/70 50/30-63/70