Subtract 16/30 from 3/7
3/7 - 16/30 is -11/105.
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,
3/7 = 3 × 30/7 × 30 = 90/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
16/30 = 16 × 7/30 × 7 = 112/210 - Subtract the two like fractions:
90/210 - 112/210 = 90 - 112/210 = -22/210 - After reducing the fraction, the answer is -11/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7-16/30 3/7-32/30 3/14-16/30 3/7-16/60 9/7-16/30 3/7-48/30 3/21-16/30 3/7-16/90 15/7-16/30 3/7-80/30 3/35-16/30 21/7-16/30 3/49-16/30