Add 18/84 and 20/72
18/84 + 20/72 is 31/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 84 × 6 = 504,
18/84 = 18 × 6/84 × 6 = 108/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
20/72 = 20 × 7/72 × 7 = 140/504 - Add the two like fractions:
108/504 + 140/504 = 108 + 140/504 = 248/504 - 248/504 simplified gives 31/63
- So, 18/84 + 20/72 = 31/63
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