Add 81/42 and 10/70
1st number: 1 39/42, 2nd number: 10/70
81/42 + 10/70 is 29/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
81/42 = 81 × 5/42 × 5 = 405/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
10/70 = 10 × 3/70 × 3 = 30/210 - Add the two like fractions:
405/210 + 30/210 = 405 + 30/210 = 435/210 - 435/210 simplified gives 29/14
- So, 81/42 + 10/70 = 29/14
In mixed form: 21/14
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