Subtract 25/16 from 21/35
1st number: 21/35, 2nd number: 1 9/16
21/35 - 25/16 is -77/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 16 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 35 × 16 = 560,
21/35 = 21 × 16/35 × 16 = 336/560 - Likewise, for the 2nd fraction, since 16 × 35 = 560,
25/16 = 25 × 35/16 × 35 = 875/560 - Subtract the two like fractions:
336/560 - 875/560 = 336 - 875/560 = -539/560 - After reducing the fraction, the answer is -77/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/35-25/16 21/35-50/16 21/70-25/16 21/35-25/32 63/35-25/16 21/35-75/16 21/35-25/48 21/35-25/80