Subtract 84/7 from 7/20
1st number: 7/20, 2nd number: 12 0/7
7/20 - 84/7 is -233/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
7/20 = 7 × 7/20 × 7 = 49/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
84/7 = 84 × 20/7 × 20 = 1680/140 - Subtract the two like fractions:
49/140 - 1680/140 = 49 - 1680/140 = -1631/140 - After reducing the fraction, the answer is -233/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20-84/7 7/40-84/7 7/20-84/14 21/20-84/7 7/60-84/7 7/20-84/21 35/20-84/7 7/20-84/35 49/20-84/7 7/20-84/49