Subtract 35/20 from 63/70
1st number: 63/70, 2nd number: 1 15/20
63/70 - 35/20 is -17/20.
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,
63/70 = 63 × 2/70 × 2 = 126/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
35/20 = 35 × 7/20 × 7 = 245/140 - Subtract the two like fractions:
126/140 - 245/140 = 126 - 245/140 = -119/140 - After reducing the fraction, the answer is -17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/70-70/20 63/70-35/40 63/70-35/60