Add 36/10 and 72/21, Solve 3 6/10 + 3 9/21 as a fraction

Add 36/10 and 72/21

1^st number: 3 6/10, 2^nd number: 3 9/21

36/10 + 72/21 is 246/35.

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,
36/10 = 36 × 21/10 × 21 = 756/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
72/21 = 72 × 10/21 × 10 = 720/210
Add the two like fractions:
756/210 + 720/210 = 756 + 720/210 = 1476/210
1476/210 simplified gives 246/35
So, 36/10 + 72/21 = 246/35
In mixed form: 71/35

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