Add 15/75 and 21/12
1st number: 15/75, 2nd number: 1 9/12
15/75 + 21/12 is 39/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 12 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
15/75 = 15 × 4/75 × 4 = 60/300 - Likewise, for the 2nd fraction, since 12 × 25 = 300,
21/12 = 21 × 25/12 × 25 = 525/300 - Add the two like fractions:
60/300 + 525/300 = 60 + 525/300 = 585/300 - 585/300 simplified gives 39/20
- So, 15/75 + 21/12 = 39/20
In mixed form: 119/20
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