Add 1/10 and 64/21, Solve 1/10 + 3 1/21 as a fraction

Add 1/10 and 64/21

1^st number: 1/10, 2^nd number: 3 1/21

1/10 + 64/21 is 661/210.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
1/10 = 1 × 21/10 × 21 = 21/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
64/21 = 64 × 10/21 × 10 = 640/210
Add the two like fractions:
21/210 + 640/210 = 21 + 640/210 = 661/210
So, 1/10 + 64/21 = 661/210
In mixed form: 331/210

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