Solutions by everydaycalculation.com

1^{st} number: 5/15, 2^{nd} number: 3 16/18

515 + 7018 is 389.

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

LCM of 15 and 18 is**90**

Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,

515 = 5 × 615 × 6 = 3090 - Likewise, for the 2nd fraction, since 18 × 5 = 90,

7018 = 70 × 518 × 5 = 35090 - Add the two like fractions:

3090 + 35090 = 30 + 35090 = 38090 - 380/90 simplified gives 389
- So, 5/15 + 70/18 = 38/9

In mixed form: 429

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