Add 15/10 and 21/9, Solve 1 5/10 + 2 3/9 as a fraction

Add 15/10 and 21/9

1^st number: 1 5/10, 2^nd number: 2 3/9

15/10 + 21/9 is 23/6.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 10 × 9 = 90,
15/10 = 15 × 9/10 × 9 = 135/90
Likewise, for the 2nd fraction, since 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90
Add the two like fractions:
135/90 + 210/90 = 135 + 210/90 = 345/90
345/90 simplified gives 23/6
So, 15/10 + 21/9 = 23/6
In mixed form: 35/6

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