Add 21/36 and 7/80
21/36 + 7/80 is 161/240.
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,
7/80 = 7 × 9/80 × 9 = 63/720 - Add the two like fractions:
420/720 + 63/720 = 420 + 63/720 = 483/720 - 483/720 simplified gives 161/240
- So, 21/36 + 7/80 = 161/240
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