Add 15/12 and 90/7
1st number: 1 3/12, 2nd number: 12 6/7
15/12 + 90/7 is 395/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
90/7 = 90 × 12/7 × 12 = 1080/84 - Add the two like fractions:
105/84 + 1080/84 = 105 + 1080/84 = 1185/84 - 1185/84 simplified gives 395/28
- So, 15/12 + 90/7 = 395/28
In mixed form: 143/28
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