Add 27/21 and 5/20, Solve 1 6/21 + 5/20 as a fraction

Add 27/21 and 5/20

1^st number: 1 6/21, 2^nd number: 5/20

27/21 + 5/20 is 43/28.

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

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 21 × 20 = 420,
27/21 = 27 × 20/21 × 20 = 540/420
Likewise, for the 2nd fraction, since 20 × 21 = 420,
5/20 = 5 × 21/20 × 21 = 105/420
Add the two like fractions:
540/420 + 105/420 = 540 + 105/420 = 645/420
645/420 simplified gives 43/28
So, 27/21 + 5/20 = 43/28
In mixed form: 115/28

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