Add 80/21 and 75/5
1st number: 3 17/21, 2nd number: 15 0/5
80/21 + 75/5 is 395/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
80/21 = 80 × 5/21 × 5 = 400/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
75/5 = 75 × 21/5 × 21 = 1575/105 - Add the two like fractions:
400/105 + 1575/105 = 400 + 1575/105 = 1975/105 - 1975/105 simplified gives 395/21
- So, 80/21 + 75/5 = 395/21
In mixed form: 1817/21
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