Add 15/36 and 42/80
15/36 + 42/80 is 113/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 36 × 20 = 720,
15/36 = 15 × 20/36 × 20 = 300/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
42/80 = 42 × 9/80 × 9 = 378/720 - Add the two like fractions:
300/720 + 378/720 = 300 + 378/720 = 678/720 - 678/720 simplified gives 113/120
- So, 15/36 + 42/80 = 113/120
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