Subtract 6/30 from 18/70
18/70 - 6/30 is 2/35.
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,
18/70 = 18 × 3/70 × 3 = 54/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
6/30 = 6 × 7/30 × 7 = 42/210 - Subtract the two like fractions:
54/210 - 42/210 = 54 - 42/210 = 12/210 - After reducing the fraction, the answer is 2/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/70-6/30 18/70-12/30 18/70-6/60 54/70-6/30 18/70-18/30 18/70-6/90 90/70-6/30 18/70-42/30