Add 81/42 and 21/35
1st number: 1 39/42, 2nd number: 21/35
81/42 + 21/35 is 177/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 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 35 × 6 = 210,
21/35 = 21 × 6/35 × 6 = 126/210 - Add the two like fractions:
405/210 + 126/210 = 405 + 126/210 = 531/210 - 531/210 simplified gives 177/70
- So, 81/42 + 21/35 = 177/70
In mixed form: 237/70
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