Add 25/21 and 5/80, Solve 1 4/21 + 5/80 as a fraction

Add 25/21 and 5/80

1^st number: 1 4/21, 2^nd number: 5/80

25/21 + 5/80 is 421/336.

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

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 21 × 80 = 1680,
25/21 = 25 × 80/21 × 80 = 2000/1680
Likewise, for the 2nd fraction, since 80 × 21 = 1680,
5/80 = 5 × 21/80 × 21 = 105/1680
Add the two like fractions:
2000/1680 + 105/1680 = 2000 + 105/1680 = 2105/1680
2105/1680 simplified gives 421/336
So, 25/21 + 5/80 = 421/336
In mixed form: 185/336

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