Add 21/72 and 63/80
21/72 + 63/80 is 259/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 72 × 10 = 720,
21/72 = 21 × 10/72 × 10 = 210/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
63/80 = 63 × 9/80 × 9 = 567/720 - Add the two like fractions:
210/720 + 567/720 = 210 + 567/720 = 777/720 - 777/720 simplified gives 259/240
- So, 21/72 + 63/80 = 259/240
In mixed form: 119/240
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