Subtract 8/70 from 4/30
4/30 - 8/70 is 2/105.
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,
4/30 = 4 × 7/30 × 7 = 28/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
8/70 = 8 × 3/70 × 3 = 24/210 - Subtract the two like fractions:
28/210 - 24/210 = 28 - 24/210 = 4/210 - After reducing the fraction, the answer is 2/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30-8/70 4/30-16/70 4/60-8/70 12/30-8/70 4/30-24/70 4/90-8/70 20/30-8/70 4/30-40/70 28/30-8/70 4/30-56/70