Add 10/7 and 15/9, Solve 1 3/7 + 1 6/9 as a fraction

Add 10/7 and 15/9

1^st number: 1 3/7, 2^nd number: 1 6/9

10/7 + 15/9 is 65/21.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 7 × 9 = 63,
10/7 = 10 × 9/7 × 9 = 90/63
Likewise, for the 2nd fraction, since 9 × 7 = 63,
15/9 = 15 × 7/9 × 7 = 105/63
Add the two like fractions:
90/63 + 105/63 = 90 + 105/63 = 195/63
195/63 simplified gives 65/21
So, 10/7 + 15/9 = 65/21
In mixed form: 32/21

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