Subtract 63/7 from 18/8
1st number: 2 2/8, 2nd number: 9 0/7
18/8 - 63/7 is -27/4.
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,
18/8 = 18 × 7/8 × 7 = 126/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
63/7 = 63 × 8/7 × 8 = 504/56 - Subtract the two like fractions:
126/56 - 504/56 = 126 - 504/56 = -378/56 - After reducing the fraction, the answer is -27/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8-63/7 18/16-63/7 18/8-63/14 54/8-63/7 18/24-63/7 18/8-63/21 90/8-63/7 18/40-63/7 18/8-63/35 18/56-63/7 18/8-63/49