Add 80/21 and 12/72
1st number: 3 17/21, 2nd number: 12/72
80/21 + 12/72 is 167/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
80/21 = 80 × 24/21 × 24 = 1920/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
12/72 = 12 × 7/72 × 7 = 84/504 - Add the two like fractions:
1920/504 + 84/504 = 1920 + 84/504 = 2004/504 - 2004/504 simplified gives 167/42
- So, 80/21 + 12/72 = 167/42
In mixed form: 341/42
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