Subtract 15/90 from 42/32
1st number: 1 10/32, 2nd number: 15/90
42/32 - 15/90 is 55/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 90 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 32 × 45 = 1440,
42/32 = 42 × 45/32 × 45 = 1890/1440 - Likewise, for the 2nd fraction, since 90 × 16 = 1440,
15/90 = 15 × 16/90 × 16 = 240/1440 - Subtract the two like fractions:
1890/1440 - 240/1440 = 1890 - 240/1440 = 1650/1440 - After reducing the fraction, the answer is 55/48
- In mixed form: 17/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/32-15/90 42/32-30/90 42/64-15/90 42/32-45/90 42/96-15/90 42/32-75/90