Add 15/25 and 21/80
15/25 + 21/80 is 69/80.
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,
15/25 = 15 × 16/25 × 16 = 240/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
21/80 = 21 × 5/80 × 5 = 105/400 - Add the two like fractions:
240/400 + 105/400 = 240 + 105/400 = 345/400 - 345/400 simplified gives 69/80
- So, 15/25 + 21/80 = 69/80
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