Add 3/80 and 27/21, Solve 3/80 + 1 6/21 as a fraction

Add 3/80 and 27/21

1^st number: 3/80, 2^nd number: 1 6/21

3/80 + 27/21 is 741/560.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 21 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 80 × 21 = 1680,
3/80 = 3 × 21/80 × 21 = 63/1680
Likewise, for the 2nd fraction, since 21 × 80 = 1680,
27/21 = 27 × 80/21 × 80 = 2160/1680
Add the two like fractions:
63/1680 + 2160/1680 = 63 + 2160/1680 = 2223/1680
2223/1680 simplified gives 741/560
So, 3/80 + 27/21 = 741/560
In mixed form: 1181/560

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