Add 30/42 and 21/10, Solve 30/42 + 2 1/10 as a fraction

Add 30/42 and 21/10

1^st number: 30/42, 2^nd number: 2 1/10

30/42 + 21/10 is 197/70.

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

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
30/42 = 30 × 5/42 × 5 = 150/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
21/10 = 21 × 21/10 × 21 = 441/210
Add the two like fractions:
150/210 + 441/210 = 150 + 441/210 = 591/210
591/210 simplified gives 197/70
So, 30/42 + 21/10 = 197/70
In mixed form: 257/70

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