Add 80/60 and 5/21
1st number: 1 20/60, 2nd number: 5/21
80/60 + 5/21 is 11/7.
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,
80/60 = 80 × 7/60 × 7 = 560/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
5/21 = 5 × 20/21 × 20 = 100/420 - Add the two like fractions:
560/420 + 100/420 = 560 + 100/420 = 660/420 - 660/420 simplified gives 11/7
- So, 80/60 + 5/21 = 11/7
In mixed form: 14/7
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