Add 8/30 and 63/42, Solve 8/30 + 1 21/42 as a fraction

Add 8/30 and 63/42

1^st number: 8/30, 2^nd number: 1 21/42

8/30 + 63/42 is 53/30.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 30 × 7 = 210,
8/30 = 8 × 7/30 × 7 = 56/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
63/42 = 63 × 5/42 × 5 = 315/210
Add the two like fractions:
56/210 + 315/210 = 56 + 315/210 = 371/210
371/210 simplified gives 53/30
So, 8/30 + 63/42 = 53/30
In mixed form: 123/30

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