Add 84/72 and 3/42
1st number: 1 12/72, 2nd number: 3/42
84/72 + 3/42 is 26/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 42 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
84/72 = 84 × 7/72 × 7 = 588/504 - Likewise, for the 2nd fraction, since 42 × 12 = 504,
3/42 = 3 × 12/42 × 12 = 36/504 - Add the two like fractions:
588/504 + 36/504 = 588 + 36/504 = 624/504 - 624/504 simplified gives 26/21
- So, 84/72 + 3/42 = 26/21
In mixed form: 15/21
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