Add 21/20 and 6/84, Solve 1 1/20 + 6/84 as a fraction

Add 21/20 and 6/84

1^st number: 1 1/20, 2^nd number: 6/84

21/20 + 6/84 is 157/140.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
21/20 = 21 × 21/20 × 21 = 441/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
6/84 = 6 × 5/84 × 5 = 30/420
Add the two like fractions:
441/420 + 30/420 = 441 + 30/420 = 471/420
471/420 simplified gives 157/140
So, 21/20 + 6/84 = 157/140
In mixed form: 117/140

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