Add 84/45 and 21/12
1st number: 1 39/45, 2nd number: 1 9/12
84/45 + 21/12 is 217/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
84/45 = 84 × 4/45 × 4 = 336/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
21/12 = 21 × 15/12 × 15 = 315/180 - Add the two like fractions:
336/180 + 315/180 = 336 + 315/180 = 651/180 - 651/180 simplified gives 217/60
- So, 84/45 + 21/12 = 217/60
In mixed form: 337/60
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