Subtract 98/70 from 12/20
1st number: 12/20, 2nd number: 1 28/70
12/20 - 98/70 is -4/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
12/20 = 12 × 7/20 × 7 = 84/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
98/70 = 98 × 2/70 × 2 = 196/140 - Subtract the two like fractions:
84/140 - 196/140 = 84 - 196/140 = -112/140 - After reducing the fraction, the answer is -4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20-98/70 12/40-98/70 36/20-98/70 12/60-98/70 60/20-98/70 84/20-98/70