Add 80/60 and 12/42
1st number: 1 20/60, 2nd number: 12/42
80/60 + 12/42 is 34/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 42 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 42 × 10 = 420,
12/42 = 12 × 10/42 × 10 = 120/420 - Add the two like fractions:
560/420 + 120/420 = 560 + 120/420 = 680/420 - 680/420 simplified gives 34/21
- So, 80/60 + 12/42 = 34/21
In mixed form: 113/21
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