Add 27/80 and 21/27, Solve 27/80 + 21/27 as a fraction

Add 27/80 and 21/27

27/80 + 21/27 is 803/720.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 27 is 2160

Next, find the equivalent fraction of both fractional numbers with denominator 2160
For the 1st fraction, since 80 × 27 = 2160,
27/80 = 27 × 27/80 × 27 = 729/2160
Likewise, for the 2nd fraction, since 27 × 80 = 2160,
21/27 = 21 × 80/27 × 80 = 1680/2160
Add the two like fractions:
729/2160 + 1680/2160 = 729 + 1680/2160 = 2409/2160
2409/2160 simplified gives 803/720
So, 27/80 + 21/27 = 803/720
In mixed form: 183/720

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