Add 1/21 and 20/16, Solve 1/21 + 1 4/16 as a fraction

Add 1/21 and 20/16

1^st number: 1/21, 2^nd number: 1 4/16

1/21 + 20/16 is 109/84.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 21 × 16 = 336,
1/21 = 1 × 16/21 × 16 = 16/336
Likewise, for the 2nd fraction, since 16 × 21 = 336,
20/16 = 20 × 21/16 × 21 = 420/336
Add the two like fractions:
16/336 + 420/336 = 16 + 420/336 = 436/336
436/336 simplified gives 109/84
So, 1/21 + 20/16 = 109/84
In mixed form: 125/84

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