Subtract 1/16 from 21/45
21/45 - 1/16 is 97/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
21/45 = 21 × 16/45 × 16 = 336/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
1/16 = 1 × 45/16 × 45 = 45/720 - Subtract the two like fractions:
336/720 - 45/720 = 336 - 45/720 = 291/720 - After reducing the fraction, the answer is 97/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45-1/16 21/45-2/16 21/90-1/16 21/45-1/32 63/45-1/16 21/45-3/16 21/45-1/48 21/45-5/16 21/45-1/80 21/45-7/16