Subtract 16/30 from 15/70
15/70 - 16/30 is -67/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
16/30 = 16 × 7/30 × 7 = 112/210 - Subtract the two like fractions:
45/210 - 112/210 = 45 - 112/210 = -67/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/70-16/30 15/70-32/30 15/70-16/60 45/70-16/30 15/70-48/30 15/70-16/90 75/70-16/30 15/70-80/30