Subtract 90/24 from 42/16
1st number: 2 10/16, 2nd number: 3 18/24
42/16 - 90/24 is -9/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 24 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 16 × 3 = 48,
42/16 = 42 × 3/16 × 3 = 126/48 - Likewise, for the 2nd fraction, since 24 × 2 = 48,
90/24 = 90 × 2/24 × 2 = 180/48 - Subtract the two like fractions:
126/48 - 180/48 = 126 - 180/48 = -54/48 - After reducing the fraction, the answer is -9/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16-90/24 42/32-90/24 42/16-90/48 42/48-90/24 42/16-90/72 42/80-90/24