Subtract 63/8 from 70/30
1st number: 2 10/30, 2nd number: 7 7/8
70/30 - 63/8 is -133/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
70/30 = 70 × 4/30 × 4 = 280/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
63/8 = 63 × 15/8 × 15 = 945/120 - Subtract the two like fractions:
280/120 - 945/120 = 280 - 945/120 = -665/120 - After reducing the fraction, the answer is -133/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/60-63/8 70/30-63/16 70/90-63/8 70/30-63/24 70/30-63/40 70/30-63/56