Subtract 1/70 from 21/3
1st number: 7 0/3, 2nd number: 1/70
21/3 - 1/70 is 489/70.
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,
1/70 = 1 × 3/70 × 3 = 3/210 - Subtract the two like fractions:
1470/210 - 3/210 = 1470 - 3/210 = 1467/210 - After reducing the fraction, the answer is 489/70
- In mixed form: 669/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/3-1/70 21/3-2/70 21/6-1/70 63/3-1/70 21/3-3/70 21/9-1/70 21/3-5/70 21/15-1/70 21/3-7/70