Subtract 84/20 from 49/70
1st number: 49/70, 2nd number: 4 4/20
49/70 - 84/20 is -7/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
49/70 = 49 × 2/70 × 2 = 98/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
84/20 = 84 × 7/20 × 7 = 588/140 - Subtract the two like fractions:
98/140 - 588/140 = 98 - 588/140 = -490/140 - After reducing the fraction, the answer is -7/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/70-84/20 49/70-84/40 49/70-84/60