Subtract 10/72 from 30/70
30/70 - 10/72 is 73/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 70 × 36 = 2520,
30/70 = 30 × 36/70 × 36 = 1080/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
10/72 = 10 × 35/72 × 35 = 350/2520 - Subtract the two like fractions:
1080/2520 - 350/2520 = 1080 - 350/2520 = 730/2520 - After reducing the fraction, the answer is 73/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70-10/72 30/70-20/72 90/70-10/72 30/70-30/72 30/70-50/72 30/70-70/72