Subtract 16/7 from 21/75
1st number: 21/75, 2nd number: 2 2/7
21/75 - 16/7 is -351/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 7 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
21/75 = 21 × 7/75 × 7 = 147/525 - Likewise, for the 2nd fraction, since 7 × 75 = 525,
16/7 = 16 × 75/7 × 75 = 1200/525 - Subtract the two like fractions:
147/525 - 1200/525 = 147 - 1200/525 = -1053/525 - After reducing the fraction, the answer is -351/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75-16/7 21/75-32/7 21/75-16/14 63/75-16/7 21/75-48/7 21/75-16/21 21/75-80/7 21/75-16/35 21/75-16/49