Subtract 7/70 from 12/15
12/15 - 7/70 is 7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
12/15 = 12 × 14/15 × 14 = 168/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
7/70 = 7 × 3/70 × 3 = 21/210 - Subtract the two like fractions:
168/210 - 21/210 = 168 - 21/210 = 147/210 - After reducing the fraction, the answer is 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15-7/70 12/15-14/70 12/30-7/70 36/15-7/70 12/15-21/70 12/45-7/70 60/15-7/70 12/15-35/70 12/75-7/70 84/15-7/70 12/15-49/70