Add 80/21 and 28/8
1st number: 3 17/21, 2nd number: 3 4/8
80/21 + 28/8 is 307/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
80/21 = 80 × 8/21 × 8 = 640/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
28/8 = 28 × 21/8 × 21 = 588/168 - Add the two like fractions:
640/168 + 588/168 = 640 + 588/168 = 1228/168 - 1228/168 simplified gives 307/42
- So, 80/21 + 28/8 = 307/42
In mixed form: 713/42
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