Add 21/25 and 7/18
21/25 + 7/18 is 553/450.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
21/25 = 21 × 18/25 × 18 = 378/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
7/18 = 7 × 25/18 × 25 = 175/450 - Add the two like fractions:
378/450 + 175/450 = 378 + 175/450 = 553/450 - So, 21/25 + 7/18 = 553/450
In mixed form: 1103/450
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