Add 21/25 and 20/35
21/25 + 20/35 is 247/175.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 35 is 175
Next, find the equivalent fraction of both fractional numbers with denominator 175 - For the 1st fraction, since 25 × 7 = 175,
21/25 = 21 × 7/25 × 7 = 147/175 - Likewise, for the 2nd fraction, since 35 × 5 = 175,
20/35 = 20 × 5/35 × 5 = 100/175 - Add the two like fractions:
147/175 + 100/175 = 147 + 100/175 = 247/175 - So, 21/25 + 20/35 = 247/175
In mixed form: 172/175
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