Add 18/15 and 42/90
1st number: 1 3/15, 2nd number: 42/90
18/15 + 42/90 is 5/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
18/15 = 18 × 6/15 × 6 = 108/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90 - Add the two like fractions:
108/90 + 42/90 = 108 + 42/90 = 150/90 - 150/90 simplified gives 5/3
- So, 18/15 + 42/90 = 5/3
In mixed form: 12/3
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