Add 21/25 and 36/80
21/25 + 36/80 is 129/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 25 × 16 = 400,
21/25 = 21 × 16/25 × 16 = 336/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
36/80 = 36 × 5/80 × 5 = 180/400 - Add the two like fractions:
336/400 + 180/400 = 336 + 180/400 = 516/400 - 516/400 simplified gives 129/100
- So, 21/25 + 36/80 = 129/100
In mixed form: 129/100
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