Add 30/18 and 70/15
1st number: 1 12/18, 2nd number: 4 10/15
30/18 + 70/15 is 19/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
30/18 = 30 × 5/18 × 5 = 150/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
70/15 = 70 × 6/15 × 6 = 420/90 - Add the two like fractions:
150/90 + 420/90 = 150 + 420/90 = 570/90 - 570/90 simplified gives 19/3
- So, 30/18 + 70/15 = 19/3
In mixed form: 61/3
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