Add 21/25 and 9/10
21/25 + 9/10 is 87/50.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 10 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 25 × 2 = 50,
21/25 = 21 × 2/25 × 2 = 42/50 - Likewise, for the 2nd fraction, since 10 × 5 = 50,
9/10 = 9 × 5/10 × 5 = 45/50 - Add the two like fractions:
42/50 + 45/50 = 42 + 45/50 = 87/50 - So, 21/25 + 9/10 = 87/50
In mixed form: 137/50
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