Solutions by everydaycalculation.com

1^{st} number: 18/21, 2^{nd} number: 1 12/42

1821 + 5442 is 157.

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

LCM of 21 and 42 is**42**

Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,

1821 = 18 × 221 × 2 = 3642 - Likewise, for the 2nd fraction, since 42 × 1 = 42,

5442 = 54 × 142 × 1 = 5442 - Add the two like fractions:

3642 + 5442 = 36 + 5442 = 9042 - 90/42 simplified gives 157
- So, 18/21 + 54/42 = 15/7

In mixed form: 217

MathStep (Works offline)

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

Android and iPhone/ iPad

Related: ^{36}/_{21}+^{54}/_{42} ^{18}/_{42}+^{54}/_{42} ^{18}/_{21}+^{54}/_{84} ^{54}/_{21}+^{54}/_{42} ^{18}/_{63}+^{54}/_{42} ^{90}/_{21}+^{54}/_{42}

© everydaycalculation.com