Add 80/42 and 8/7
1st number: 1 38/42, 2nd number: 1 1/7
80/42 + 8/7 is 64/21.
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,
8/7 = 8 × 6/7 × 6 = 48/42 - Add the two like fractions:
80/42 + 48/42 = 80 + 48/42 = 128/42 - 128/42 simplified gives 64/21
- So, 80/42 + 8/7 = 64/21
In mixed form: 31/21
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