Add 21/25 and 40/45
21/25 + 40/45 is 389/225.
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,
21/25 = 21 × 9/25 × 9 = 189/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
40/45 = 40 × 5/45 × 5 = 200/225 - Add the two like fractions:
189/225 + 200/225 = 189 + 200/225 = 389/225 - So, 21/25 + 40/45 = 389/225
In mixed form: 1164/225
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