Subtract 21/70 from 16/27
16/27 - 21/70 is 79/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 27 × 70 = 1890,
16/27 = 16 × 70/27 × 70 = 1120/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
21/70 = 21 × 27/70 × 27 = 567/1890 - Subtract the two like fractions:
1120/1890 - 567/1890 = 1120 - 567/1890 = 553/1890 - After reducing the fraction, the answer is 79/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/27-21/70 16/27-42/70 16/54-21/70 48/27-21/70 16/27-63/70 16/81-21/70 80/27-21/70