Add 20/25 and 21/45
20/25 + 21/45 is 19/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 25 × 9 = 225,
20/25 = 20 × 9/25 × 9 = 180/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
21/45 = 21 × 5/45 × 5 = 105/225 - Add the two like fractions:
180/225 + 105/225 = 180 + 105/225 = 285/225 - 285/225 simplified gives 19/15
- So, 20/25 + 21/45 = 19/15
In mixed form: 14/15
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