Add 84/72 and 36/21
1st number: 1 12/72, 2nd number: 1 15/21
84/72 + 36/21 is 121/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 21 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 21 × 24 = 504,
36/21 = 36 × 24/21 × 24 = 864/504 - Add the two like fractions:
588/504 + 864/504 = 588 + 864/504 = 1452/504 - 1452/504 simplified gives 121/42
- So, 84/72 + 36/21 = 121/42
In mixed form: 237/42
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