Solutions by everydaycalculation.com

2184 + 330 is 720.

- Find the least common denominator or LCM of the two denominators:

LCM of 84 and 30 is**420**

Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,

2184 = 21 × 584 × 5 = 105420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,

330 = 3 × 1430 × 14 = 42420 - Add the two like fractions:

105420 + 42420 = 105 + 42420 = 147420 - 147/420 simplified gives 720
- So, 21/84 + 3/30 = 7/20

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:

Android and iPhone/ iPad

Related: ^{42}/_{84}+^{3}/_{30} ^{21}/_{84}+^{6}/_{30} ^{21}/_{84}+^{3}/_{60} ^{63}/_{84}+^{3}/_{30} ^{21}/_{84}+^{9}/_{30} ^{21}/_{84}+^{3}/_{90} ^{21}/_{84}+^{15}/_{30} ^{21}/_{84}+^{21}/_{30}

© everydaycalculation.com