Add 27/21 and 80/25, Solve 1 6/21 + 3 5/25 as a fraction

Add 27/21 and 80/25

1^st number: 1 6/21, 2^nd number: 3 5/25

27/21 + 80/25 is 157/35.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 21 × 25 = 525,
27/21 = 27 × 25/21 × 25 = 675/525
Likewise, for the 2nd fraction, since 25 × 21 = 525,
80/25 = 80 × 21/25 × 21 = 1680/525
Add the two like fractions:
675/525 + 1680/525 = 675 + 1680/525 = 2355/525
2355/525 simplified gives 157/35
So, 27/21 + 80/25 = 157/35
In mixed form: 417/35

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