Add 20/45 and 10/56
20/45 + 10/56 is 157/252.
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,
10/56 = 10 × 45/56 × 45 = 450/2520 - Add the two like fractions:
1120/2520 + 450/2520 = 1120 + 450/2520 = 1570/2520 - 1570/2520 simplified gives 157/252
- So, 20/45 + 10/56 = 157/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45+10/56 20/45+20/56 20/90+10/56 60/45+10/56 20/45+30/56 20/45+50/56 20/45+70/56