Subtract 30/7 from 10/8
1st number: 1 2/8, 2nd number: 4 2/7
10/8 - 30/7 is -85/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
10/8 = 10 × 7/8 × 7 = 70/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
30/7 = 30 × 8/7 × 8 = 240/56 - Subtract the two like fractions:
70/56 - 240/56 = 70 - 240/56 = -170/56 - After reducing the fraction, the answer is -85/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/8-30/7 10/8-60/7 10/16-30/7 10/8-30/14 30/8-30/7 10/8-90/7 10/24-30/7 10/8-30/21 50/8-30/7 10/40-30/7 10/8-30/35 70/8-30/7 10/56-30/7 10/8-30/49