Add 25/15 and 27/21, Solve 1 10/15 + 1 6/21 as a fraction

Add 25/15 and 27/21

1^st number: 1 10/15, 2^nd number: 1 6/21

25/15 + 27/21 is 62/21.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 15 × 7 = 105,
25/15 = 25 × 7/15 × 7 = 175/105
Likewise, for the 2nd fraction, since 21 × 5 = 105,
27/21 = 27 × 5/21 × 5 = 135/105
Add the two like fractions:
175/105 + 135/105 = 175 + 135/105 = 310/105
310/105 simplified gives 62/21
So, 25/15 + 27/21 = 62/21
In mixed form: 220/21

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