Add 15/4 and 90/12
1st number: 3 3/4, 2nd number: 7 6/12
15/4 + 90/12 is 45/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
15/4 = 15 × 3/4 × 3 = 45/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
90/12 = 90 × 1/12 × 1 = 90/12 - Add the two like fractions:
45/12 + 90/12 = 45 + 90/12 = 135/12 - 135/12 simplified gives 45/4
- So, 15/4 + 90/12 = 45/4
In mixed form: 111/4
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