Add 42/72 and 45/84
42/72 + 45/84 is 47/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 84 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
42/72 = 42 × 7/72 × 7 = 294/504 - Likewise, for the 2nd fraction, since 84 × 6 = 504,
45/84 = 45 × 6/84 × 6 = 270/504 - Add the two like fractions:
294/504 + 270/504 = 294 + 270/504 = 564/504 - 564/504 simplified gives 47/42
- So, 42/72 + 45/84 = 47/42
In mixed form: 15/42
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