Add 42/80 and 21/8
1st number: 42/80, 2nd number: 2 5/8
42/80 + 21/8 is 63/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 8 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
42/80 = 42 × 1/80 × 1 = 42/80 - Likewise, for the 2nd fraction, since 8 × 10 = 80,
21/8 = 21 × 10/8 × 10 = 210/80 - Add the two like fractions:
42/80 + 210/80 = 42 + 210/80 = 252/80 - 252/80 simplified gives 63/20
- So, 42/80 + 21/8 = 63/20
In mixed form: 33/20
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