Subtract 10/84 from 72/70
1st number: 1 2/70, 2nd number: 10/84
72/70 - 10/84 is 191/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
72/70 = 72 × 6/70 × 6 = 432/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
10/84 = 10 × 5/84 × 5 = 50/420 - Subtract the two like fractions:
432/420 - 50/420 = 432 - 50/420 = 382/420 - After reducing the fraction, the answer is 191/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70-20/84 72/70-30/84 72/70-50/84 72/70-70/84