Add 9/42 and 20/72
9/42 + 20/72 is 31/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 42 × 12 = 504,
9/42 = 9 × 12/42 × 12 = 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, 9/42 + 20/72 = 31/63
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