Add 42/80 and 15/10
1st number: 42/80, 2nd number: 1 5/10
42/80 + 15/10 is 81/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 10 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 10 × 8 = 80,
15/10 = 15 × 8/10 × 8 = 120/80 - Add the two like fractions:
42/80 + 120/80 = 42 + 120/80 = 162/80 - 162/80 simplified gives 81/40
- So, 42/80 + 15/10 = 81/40
In mixed form: 21/40
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