Add 21/36 and 28/80
21/36 + 28/80 is 14/15.
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,
21/36 = 21 × 20/36 × 20 = 420/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
28/80 = 28 × 9/80 × 9 = 252/720 - Add the two like fractions:
420/720 + 252/720 = 420 + 252/720 = 672/720 - 672/720 simplified gives 14/15
- So, 21/36 + 28/80 = 14/15
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