Add 80/14 and 45/21
1st number: 5 10/14, 2nd number: 2 3/21
80/14 + 45/21 is 55/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
80/14 = 80 × 3/14 × 3 = 240/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
45/21 = 45 × 2/21 × 2 = 90/42 - Add the two like fractions:
240/42 + 90/42 = 240 + 90/42 = 330/42 - 330/42 simplified gives 55/7
- So, 80/14 + 45/21 = 55/7
In mixed form: 76/7
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