Add 21/25 and 18/28
21/25 + 18/28 is 519/350.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 28 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 25 × 28 = 700,
21/25 = 21 × 28/25 × 28 = 588/700 - Likewise, for the 2nd fraction, since 28 × 25 = 700,
18/28 = 18 × 25/28 × 25 = 450/700 - Add the two like fractions:
588/700 + 450/700 = 588 + 450/700 = 1038/700 - 1038/700 simplified gives 519/350
- So, 21/25 + 18/28 = 519/350
In mixed form: 1169/350
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