Add 80/5 and 21/12
1st number: 16 0/5, 2nd number: 1 9/12
80/5 + 21/12 is 71/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
80/5 = 80 × 12/5 × 12 = 960/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60 - Add the two like fractions:
960/60 + 105/60 = 960 + 105/60 = 1065/60 - 1065/60 simplified gives 71/4
- So, 80/5 + 21/12 = 71/4
In mixed form: 173/4
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