Subtract 63/8 from 16/90
1st number: 16/90, 2nd number: 7 7/8
16/90 - 63/8 is -2771/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
16/90 = 16 × 4/90 × 4 = 64/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
63/8 = 63 × 45/8 × 45 = 2835/360 - Subtract the two like fractions:
64/360 - 2835/360 = 64 - 2835/360 = -2771/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/90-63/8 16/90-63/16 48/90-63/8 16/90-63/24 80/90-63/8 16/90-63/40 16/90-63/56