Add 21/7 and 28/70
1st number: 3 0/7, 2nd number: 28/70
21/7 + 28/70 is 17/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
21/7 = 21 × 10/7 × 10 = 210/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
28/70 = 28 × 1/70 × 1 = 28/70 - Add the two like fractions:
210/70 + 28/70 = 210 + 28/70 = 238/70 - 238/70 simplified gives 17/5
- So, 21/7 + 28/70 = 17/5
In mixed form: 32/5
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