Subtract 7/70 from 84/72
1st number: 1 12/72, 2nd number: 7/70
84/72 - 7/70 is 16/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
84/72 = 84 × 35/72 × 35 = 2940/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
7/70 = 7 × 36/70 × 36 = 252/2520 - Subtract the two like fractions:
2940/2520 - 252/2520 = 2940 - 252/2520 = 2688/2520 - After reducing the fraction, the answer is 16/15
- In mixed form: 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72-14/70 84/72-21/70 84/72-35/70 84/72-49/70