Add 21/45 and 2/56
21/45 + 2/56 is 211/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 45 × 56 = 2520,
21/45 = 21 × 56/45 × 56 = 1176/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
2/56 = 2 × 45/56 × 45 = 90/2520 - Add the two like fractions:
1176/2520 + 90/2520 = 1176 + 90/2520 = 1266/2520 - 1266/2520 simplified gives 211/420
- So, 21/45 + 2/56 = 211/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/45+2/56 21/45+4/56 21/90+2/56 63/45+2/56 21/45+6/56 21/45+10/56 21/45+14/56