Add 84/45 and 18/56
1st number: 1 39/45, 2nd number: 18/56
84/45 + 18/56 is 919/420.
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,
84/45 = 84 × 56/45 × 56 = 4704/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
18/56 = 18 × 45/56 × 45 = 810/2520 - Add the two like fractions:
4704/2520 + 810/2520 = 4704 + 810/2520 = 5514/2520 - 5514/2520 simplified gives 919/420
- So, 84/45 + 18/56 = 919/420
In mixed form: 279/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+36/56 84/90+18/56 84/45+54/56 84/45+90/56