Add 15/21 and 60/72
15/21 + 60/72 is 65/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
15/21 = 15 × 24/21 × 24 = 360/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
60/72 = 60 × 7/72 × 7 = 420/504 - Add the two like fractions:
360/504 + 420/504 = 360 + 420/504 = 780/504 - 780/504 simplified gives 65/42
- So, 15/21 + 60/72 = 65/42
In mixed form: 123/42
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