Add 84/21 and 25/80
1st number: 4 0/21, 2nd number: 25/80
84/21 + 25/80 is 69/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
84/21 = 84 × 80/21 × 80 = 6720/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
25/80 = 25 × 21/80 × 21 = 525/1680 - Add the two like fractions:
6720/1680 + 525/1680 = 6720 + 525/1680 = 7245/1680 - 7245/1680 simplified gives 69/16
- So, 84/21 + 25/80 = 69/16
In mixed form: 45/16
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