Add 20/45 and 4/56
20/45 + 4/56 is 65/126.
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,
20/45 = 20 × 56/45 × 56 = 1120/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
4/56 = 4 × 45/56 × 45 = 180/2520 - Add the two like fractions:
1120/2520 + 180/2520 = 1120 + 180/2520 = 1300/2520 - 1300/2520 simplified gives 65/126
- So, 20/45 + 4/56 = 65/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45+4/56 20/45+8/56 20/90+4/56 60/45+4/56 20/45+12/56 20/45+20/56 20/45+28/56