Add 16/18 and 42/21, Solve 16/18 + 2 0/21 as a fraction

Add 16/18 and 42/21

1^st number: 16/18, 2^nd number: 2 0/21

16/18 + 42/21 is 26/9.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
16/18 = 16 × 7/18 × 7 = 112/126
Likewise, for the 2nd fraction, since 21 × 6 = 126,
42/21 = 42 × 6/21 × 6 = 252/126
Add the two like fractions:
112/126 + 252/126 = 112 + 252/126 = 364/126
364/126 simplified gives 26/9
So, 16/18 + 42/21 = 26/9
In mixed form: 28/9

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