Subtract 30/15 from 8/70
1st number: 8/70, 2nd number: 2 0/15
8/70 - 30/15 is -66/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
8/70 = 8 × 3/70 × 3 = 24/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
30/15 = 30 × 14/15 × 14 = 420/210 - Subtract the two like fractions:
24/210 - 420/210 = 24 - 420/210 = -396/210 - After reducing the fraction, the answer is -66/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/70-30/15 8/70-60/15 24/70-30/15 8/70-90/15 8/70-30/45 40/70-30/15 8/70-30/75 56/70-30/15