Add 18/72 and 10/21
18/72 + 10/21 is 61/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 21 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
18/72 = 18 × 7/72 × 7 = 126/504 - Likewise, for the 2nd fraction, since 21 × 24 = 504,
10/21 = 10 × 24/21 × 24 = 240/504 - Add the two like fractions:
126/504 + 240/504 = 126 + 240/504 = 366/504 - 366/504 simplified gives 61/84
- So, 18/72 + 10/21 = 61/84
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