Add 81/70 and 20/40
1st number: 1 11/70, 2nd number: 20/40
81/70 + 20/40 is 58/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
81/70 = 81 × 4/70 × 4 = 324/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
20/40 = 20 × 7/40 × 7 = 140/280 - Add the two like fractions:
324/280 + 140/280 = 324 + 140/280 = 464/280 - 464/280 simplified gives 58/35
- So, 81/70 + 20/40 = 58/35
In mixed form: 123/35
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