Add 30/12 and 90/15
1st number: 2 6/12, 2nd number: 6 0/15
30/12 + 90/15 is 17/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
30/12 = 30 × 5/12 × 5 = 150/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
90/15 = 90 × 4/15 × 4 = 360/60 - Add the two like fractions:
150/60 + 360/60 = 150 + 360/60 = 510/60 - 510/60 simplified gives 17/2
- So, 30/12 + 90/15 = 17/2
In mixed form: 81/2
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