Add 80/42 and 9/7
1st number: 1 38/42, 2nd number: 1 2/7
80/42 + 9/7 is 67/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
80/42 = 80 × 1/42 × 1 = 80/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
9/7 = 9 × 6/7 × 6 = 54/42 - Add the two like fractions:
80/42 + 54/42 = 80 + 54/42 = 134/42 - 134/42 simplified gives 67/21
- So, 80/42 + 9/7 = 67/21
In mixed form: 34/21
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