Add 18/12 and 75/20
1st number: 1 6/12, 2nd number: 3 15/20
18/12 + 75/20 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
18/12 = 18 × 5/12 × 5 = 90/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
75/20 = 75 × 3/20 × 3 = 225/60 - Add the two like fractions:
90/60 + 225/60 = 90 + 225/60 = 315/60 - 315/60 simplified gives 21/4
- So, 18/12 + 75/20 = 21/4
In mixed form: 51/4
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