Add 28/12 and 80/42
1st number: 2 4/12, 2nd number: 1 38/42
28/12 + 80/42 is 89/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
28/12 = 28 × 7/12 × 7 = 196/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
80/42 = 80 × 2/42 × 2 = 160/84 - Add the two like fractions:
196/84 + 160/84 = 196 + 160/84 = 356/84 - 356/84 simplified gives 89/21
- So, 28/12 + 80/42 = 89/21
In mixed form: 45/21
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