Add 21/70 and 21/25
21/70 + 21/25 is 57/50.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 25 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 70 × 5 = 350,
21/70 = 21 × 5/70 × 5 = 105/350 - Likewise, for the 2nd fraction, since 25 × 14 = 350,
21/25 = 21 × 14/25 × 14 = 294/350 - Add the two like fractions:
105/350 + 294/350 = 105 + 294/350 = 399/350 - 399/350 simplified gives 57/50
- So, 21/70 + 21/25 = 57/50
In mixed form: 17/50
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