Subtract 25/70 from 21/3
1st number: 7 0/3, 2nd number: 25/70
21/3 - 25/70 is 93/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 3 × 70 = 210,
21/3 = 21 × 70/3 × 70 = 1470/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
25/70 = 25 × 3/70 × 3 = 75/210 - Subtract the two like fractions:
1470/210 - 75/210 = 1470 - 75/210 = 1395/210 - After reducing the fraction, the answer is 93/14
- In mixed form: 69/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3-25/70 21/3-50/70 21/6-25/70 63/3-25/70 21/3-75/70 21/9-25/70 21/15-25/70