Add 27/80 and 70/21
1st number: 27/80, 2nd number: 3 7/21
27/80 + 70/21 is 881/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 21 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 80 × 21 = 1680,
27/80 = 27 × 21/80 × 21 = 567/1680 - Likewise, for the 2nd fraction, since 21 × 80 = 1680,
70/21 = 70 × 80/21 × 80 = 5600/1680 - Add the two like fractions:
567/1680 + 5600/1680 = 567 + 5600/1680 = 6167/1680 - 6167/1680 simplified gives 881/240
- So, 27/80 + 70/21 = 881/240
In mixed form: 3161/240
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