Subtract 84/10 from 3/7
1st number: 3/7, 2nd number: 8 4/10
3/7 - 84/10 is -279/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
3/7 = 3 × 10/7 × 10 = 30/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
84/10 = 84 × 7/10 × 7 = 588/70 - Subtract the two like fractions:
30/70 - 588/70 = 30 - 588/70 = -558/70 - After reducing the fraction, the answer is -279/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7-84/10 3/14-84/10 3/7-84/20 9/7-84/10 3/21-84/10 3/7-84/30 15/7-84/10 3/35-84/10 3/7-84/50 21/7-84/10 3/49-84/10 3/7-84/70