Add 18/63 and 21/72
18/63 + 21/72 is 97/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 63 × 8 = 504,
18/63 = 18 × 8/63 × 8 = 144/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504 - Add the two like fractions:
144/504 + 147/504 = 144 + 147/504 = 291/504 - 291/504 simplified gives 97/168
- So, 18/63 + 21/72 = 97/168
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