Solutions by everydaycalculation.com

1^{st} number: 1 10/15, 2^{nd} number: 1 17/18

2515 + 3518 is 6518.

- 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,

2515 = 25 × 615 × 6 = 15090 - Likewise, for the 2nd fraction, since 18 × 5 = 90,

3518 = 35 × 518 × 5 = 17590 - Add the two like fractions:

15090 + 17590 = 150 + 17590 = 32590 - 325/90 simplified gives 6518
- So, 25/15 + 35/18 = 65/18

In mixed form: 31118

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