Add 21/14 and 5/12, Solve 1 7/14 + 5/12 as a fraction

Add 21/14 and 5/12

1^st number: 1 7/14, 2^nd number: 5/12

21/14 + 5/12 is 23/12.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 14 × 6 = 84,
21/14 = 21 × 6/14 × 6 = 126/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
5/12 = 5 × 7/12 × 7 = 35/84
Add the two like fractions:
126/84 + 35/84 = 126 + 35/84 = 161/84
161/84 simplified gives 23/12
So, 21/14 + 5/12 = 23/12
In mixed form: 111/12

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