Add 81/42 and 72/70
1st number: 1 39/42, 2nd number: 1 2/70
81/42 + 72/70 is 207/70.
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,
72/70 = 72 × 3/70 × 3 = 216/210 - Add the two like fractions:
405/210 + 216/210 = 405 + 216/210 = 621/210 - 621/210 simplified gives 207/70
- So, 81/42 + 72/70 = 207/70
In mixed form: 267/70
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