Add 21/28 and 21/25
21/28 + 21/25 is 159/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 25 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 28 × 25 = 700,
21/28 = 21 × 25/28 × 25 = 525/700 - Likewise, for the 2nd fraction, since 25 × 28 = 700,
21/25 = 21 × 28/25 × 28 = 588/700 - Add the two like fractions:
525/700 + 588/700 = 525 + 588/700 = 1113/700 - 1113/700 simplified gives 159/100
- So, 21/28 + 21/25 = 159/100
In mixed form: 159/100
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