Add 21/5 and 20/70
1st number: 4 1/5, 2nd number: 20/70
21/5 + 20/70 is 157/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
21/5 = 21 × 14/5 × 14 = 294/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
20/70 = 20 × 1/70 × 1 = 20/70 - Add the two like fractions:
294/70 + 20/70 = 294 + 20/70 = 314/70 - 314/70 simplified gives 157/35
- So, 21/5 + 20/70 = 157/35
In mixed form: 417/35
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