Add 30/45 and 15/84
30/45 + 15/84 is 71/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
30/45 = 30 × 28/45 × 28 = 840/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
15/84 = 15 × 15/84 × 15 = 225/1260 - Add the two like fractions:
840/1260 + 225/1260 = 840 + 225/1260 = 1065/1260 - 1065/1260 simplified gives 71/84
- So, 30/45 + 15/84 = 71/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/45+15/84 30/45+30/84 30/90+15/84 90/45+15/84 30/45+45/84 30/45+75/84