Add 15/36 and 42/45
15/36 + 42/45 is 27/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
15/36 = 15 × 5/36 × 5 = 75/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
42/45 = 42 × 4/45 × 4 = 168/180 - Add the two like fractions:
75/180 + 168/180 = 75 + 168/180 = 243/180 - 243/180 simplified gives 27/20
- So, 15/36 + 42/45 = 27/20
In mixed form: 17/20
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