Add 3/42 and 81/70
1st number: 3/42, 2nd number: 1 11/70
3/42 + 81/70 is 43/35.
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,
3/42 = 3 × 5/42 × 5 = 15/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
81/70 = 81 × 3/70 × 3 = 243/210 - Add the two like fractions:
15/210 + 243/210 = 15 + 243/210 = 258/210 - 258/210 simplified gives 43/35
- So, 3/42 + 81/70 = 43/35
In mixed form: 18/35
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