Add 20/25 and 42/70
20/25 + 42/70 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 25 × 14 = 350,
20/25 = 20 × 14/25 × 14 = 280/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
42/70 = 42 × 5/70 × 5 = 210/350 - Add the two like fractions:
280/350 + 210/350 = 280 + 210/350 = 490/350 - 490/350 simplified gives 7/5
- So, 20/25 + 42/70 = 7/5
In mixed form: 12/5
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