Add 72/60 and 8/21
1st number: 1 12/60, 2nd number: 8/21
72/60 + 8/21 is 166/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
72/60 = 72 × 7/60 × 7 = 504/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
8/21 = 8 × 20/21 × 20 = 160/420 - Add the two like fractions:
504/420 + 160/420 = 504 + 160/420 = 664/420 - 664/420 simplified gives 166/105
- So, 72/60 + 8/21 = 166/105
In mixed form: 161/105
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