Add 20/5 and 45/12
1st number: 4 0/5, 2nd number: 3 9/12
20/5 + 45/12 is 31/4.
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,
20/5 = 20 × 12/5 × 12 = 240/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
45/12 = 45 × 5/12 × 5 = 225/60 - Add the two like fractions:
240/60 + 225/60 = 240 + 225/60 = 465/60 - 465/60 simplified gives 31/4
- So, 20/5 + 45/12 = 31/4
In mixed form: 73/4
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