Add 21/10 and 36/42, Solve 2 1/10 + 36/42 as a fraction

Add 21/10 and 36/42

1^st number: 2 1/10, 2^nd number: 36/42

21/10 + 36/42 is 207/70.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
21/10 = 21 × 21/10 × 21 = 441/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
36/42 = 36 × 5/42 × 5 = 180/210
Add the two like fractions:
441/210 + 180/210 = 441 + 180/210 = 621/210
621/210 simplified gives 207/70
So, 21/10 + 36/42 = 207/70
In mixed form: 267/70

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