Add 27/20 and 6/21, Solve 1 7/20 + 6/21 as a fraction

Add 27/20 and 6/21

1^st number: 1 7/20, 2^nd number: 6/21

27/20 + 6/21 is 229/140.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
27/20 = 27 × 21/20 × 21 = 567/420
Likewise, for the 2nd fraction, since 21 × 20 = 420,
6/21 = 6 × 20/21 × 20 = 120/420
Add the two like fractions:
567/420 + 120/420 = 567 + 120/420 = 687/420
687/420 simplified gives 229/140
So, 27/20 + 6/21 = 229/140
In mixed form: 189/140

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