Subtract 63/70 from 42/8
1st number: 5 2/8, 2nd number: 63/70
42/8 - 63/70 is 87/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 8 × 35 = 280,
42/8 = 42 × 35/8 × 35 = 1470/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
63/70 = 63 × 4/70 × 4 = 252/280 - Subtract the two like fractions:
1470/280 - 252/280 = 1470 - 252/280 = 1218/280 - After reducing the fraction, the answer is 87/20
- In mixed form: 47/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8-63/70 42/16-63/70 42/24-63/70 42/40-63/70 42/56-63/70