Add 21/42 and 30/16, Solve 21/42 + 1 14/16 as a fraction

Add 21/42 and 30/16

1^st number: 21/42, 2^nd number: 1 14/16

21/42 + 30/16 is 19/8.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 16 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 42 × 8 = 336,
21/42 = 21 × 8/42 × 8 = 168/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
30/16 = 30 × 21/16 × 21 = 630/336
Add the two like fractions:
168/336 + 630/336 = 168 + 630/336 = 798/336
798/336 simplified gives 19/8
So, 21/42 + 30/16 = 19/8
In mixed form: 23/8

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