Add 3/28 and 80/21
1st number: 3/28, 2nd number: 3 17/21
3/28 + 80/21 is 47/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
3/28 = 3 × 3/28 × 3 = 9/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
80/21 = 80 × 4/21 × 4 = 320/84 - Add the two like fractions:
9/84 + 320/84 = 9 + 320/84 = 329/84 - 329/84 simplified gives 47/12
- So, 3/28 + 80/21 = 47/12
In mixed form: 311/12
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