Add 20/90 and 21/25
20/90 + 21/25 is 239/225.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 25 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
20/90 = 20 × 5/90 × 5 = 100/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
21/25 = 21 × 18/25 × 18 = 378/450 - Add the two like fractions:
100/450 + 378/450 = 100 + 378/450 = 478/450 - 478/450 simplified gives 239/225
- So, 20/90 + 21/25 = 239/225
In mixed form: 114/225
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