Add 21/63 and 3/72
21/63 + 3/72 is 3/8.
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,
21/63 = 21 × 8/63 × 8 = 168/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
3/72 = 3 × 7/72 × 7 = 21/504 - Add the two like fractions:
168/504 + 21/504 = 168 + 21/504 = 189/504 - 189/504 simplified gives 3/8
- So, 21/63 + 3/72 = 3/8
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