Add 1/5 and 81/42
1st number: 1/5, 2nd number: 1 39/42
1/5 + 81/42 is 149/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
1/5 = 1 × 42/5 × 42 = 42/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
81/42 = 81 × 5/42 × 5 = 405/210 - Add the two like fractions:
42/210 + 405/210 = 42 + 405/210 = 447/210 - 447/210 simplified gives 149/70
- So, 1/5 + 81/42 = 149/70
In mixed form: 29/70
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