Add 42/15 and 18/45
1st number: 2 12/15, 2nd number: 18/45
42/15 + 18/45 is 16/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
42/15 = 42 × 3/15 × 3 = 126/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
18/45 = 18 × 1/45 × 1 = 18/45 - Add the two like fractions:
126/45 + 18/45 = 126 + 18/45 = 144/45 - 144/45 simplified gives 16/5
- So, 42/15 + 18/45 = 16/5
In mixed form: 31/5
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