Add 15/12 and 90/18
1st number: 1 3/12, 2nd number: 5 0/18
15/12 + 90/18 is 25/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
15/12 = 15 × 3/12 × 3 = 45/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
90/18 = 90 × 2/18 × 2 = 180/36 - Add the two like fractions:
45/36 + 180/36 = 45 + 180/36 = 225/36 - 225/36 simplified gives 25/4
- So, 15/12 + 90/18 = 25/4
In mixed form: 61/4
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