Subtract 42/16 from 9/8
1st number: 1 1/8, 2nd number: 2 10/16
9/8 - 42/16 is -3/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 8 × 2 = 16,
9/8 = 9 × 2/8 × 2 = 18/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
42/16 = 42 × 1/16 × 1 = 42/16 - Subtract the two like fractions:
18/16 - 42/16 = 18 - 42/16 = -24/16 - After reducing the fraction, the answer is -3/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/8-42/16 9/8-84/16 9/16-42/16 9/8-42/32 27/8-42/16 9/24-42/16 9/8-42/48 45/8-42/16 9/40-42/16 9/8-42/80 63/8-42/16 9/56-42/16