Add 20/45 and 48/56
20/45 + 48/56 is 82/63.
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,
48/56 = 48 × 45/56 × 45 = 2160/2520 - Add the two like fractions:
1120/2520 + 2160/2520 = 1120 + 2160/2520 = 3280/2520 - 3280/2520 simplified gives 82/63
- So, 20/45 + 48/56 = 82/63
In mixed form: 119/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45+48/56 20/45+96/56 20/90+48/56 60/45+48/56