Add 21/90 and 4/27
21/90 + 4/27 is 103/270.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 27 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
21/90 = 21 × 3/90 × 3 = 63/270 - Likewise, for the 2nd fraction, since 27 × 10 = 270,
4/27 = 4 × 10/27 × 10 = 40/270 - Add the two like fractions:
63/270 + 40/270 = 63 + 40/270 = 103/270 - So, 21/90 + 4/27 = 103/270
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/90+4/27 21/90+8/27 21/90+4/54 63/90+4/27 21/90+12/27 21/90+4/81 21/90+20/27 21/90+28/27