Add 5/84 and 72/45
1st number: 5/84, 2nd number: 1 27/45
5/84 + 72/45 is 697/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
5/84 = 5 × 15/84 × 15 = 75/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
72/45 = 72 × 28/45 × 28 = 2016/1260 - Add the two like fractions:
75/1260 + 2016/1260 = 75 + 2016/1260 = 2091/1260 - 2091/1260 simplified gives 697/420
- So, 5/84 + 72/45 = 697/420
In mixed form: 1277/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/84+72/45 5/84+72/90 15/84+72/45 25/84+72/45 35/84+72/45