Add 15/27 and 12/40
15/27 + 12/40 is 77/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 27 × 40 = 1080,
15/27 = 15 × 40/27 × 40 = 600/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
12/40 = 12 × 27/40 × 27 = 324/1080 - Add the two like fractions:
600/1080 + 324/1080 = 600 + 324/1080 = 924/1080 - 924/1080 simplified gives 77/90
- So, 15/27 + 12/40 = 77/90
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