Add 4/27 and 21/70
4/27 + 21/70 is 121/270.
Steps for adding 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,
4/27 = 4 × 70/27 × 70 = 280/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
21/70 = 21 × 27/70 × 27 = 567/1890 - Add the two like fractions:
280/1890 + 567/1890 = 280 + 567/1890 = 847/1890 - 847/1890 simplified gives 121/270
- So, 4/27 + 21/70 = 121/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/27+21/70 4/27+42/70 4/54+21/70 12/27+21/70 4/27+63/70 4/81+21/70 20/27+21/70 28/27+21/70