Add 42/21 and 3/8, Solve 2 0/21 + 3/8 as a fraction

Add 42/21 and 3/8

1^st number: 2 0/21, 2^nd number: 3/8

42/21 + 3/8 is 19/8.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 21 × 8 = 168,
42/21 = 42 × 8/21 × 8 = 336/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
3/8 = 3 × 21/8 × 21 = 63/168
Add the two like fractions:
336/168 + 63/168 = 336 + 63/168 = 399/168
399/168 simplified gives 19/8
So, 42/21 + 3/8 = 19/8
In mixed form: 23/8

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