Add 21/45 and 2/6
21/45 + 2/6 is 4/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 6 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Likewise, for the 2nd fraction, since 6 × 15 = 90,
2/6 = 2 × 15/6 × 15 = 30/90 - Add the two like fractions:
42/90 + 30/90 = 42 + 30/90 = 72/90 - 72/90 simplified gives 4/5
- So, 21/45 + 2/6 = 4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45+2/6 21/45+4/6 21/90+2/6 21/45+2/12 63/45+2/6 21/45+2/18 21/45+10/6 21/45+2/30 21/45+14/6 21/45+2/42