Add 20/45 and 12/56
20/45 + 12/56 is 83/126.
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,
12/56 = 12 × 45/56 × 45 = 540/2520 - Add the two like fractions:
1120/2520 + 540/2520 = 1120 + 540/2520 = 1660/2520 - 1660/2520 simplified gives 83/126
- So, 20/45 + 12/56 = 83/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45+12/56 20/45+24/56 20/90+12/56 60/45+12/56 20/45+36/56 20/45+60/56 20/45+84/56