Add 80/21 and 10/20
1st number: 3 17/21, 2nd number: 10/20
80/21 + 10/20 is 181/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
80/21 = 80 × 20/21 × 20 = 1600/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
10/20 = 10 × 21/20 × 21 = 210/420 - Add the two like fractions:
1600/420 + 210/420 = 1600 + 210/420 = 1810/420 - 1810/420 simplified gives 181/42
- So, 80/21 + 10/20 = 181/42
In mixed form: 413/42
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