Subtract 25/16 from 42/27
1st number: 1 15/27, 2nd number: 1 9/16
42/27 - 25/16 is -1/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 16 is 432
Next, find the equivalent fraction of both fractional numbers with denominator 432 - For the 1st fraction, since 27 × 16 = 432,
42/27 = 42 × 16/27 × 16 = 672/432 - Likewise, for the 2nd fraction, since 16 × 27 = 432,
25/16 = 25 × 27/16 × 27 = 675/432 - Subtract the two like fractions:
672/432 - 675/432 = 672 - 675/432 = -3/432 - After reducing the fraction, the answer is -1/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/27-25/16 42/27-50/16 42/54-25/16 42/27-25/32 42/27-75/16 42/81-25/16 42/27-25/48 42/27-25/80