Add 81/70 and 15/56
1st number: 1 11/70, 2nd number: 15/56
81/70 + 15/56 is 57/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 56 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 56 × 5 = 280,
15/56 = 15 × 5/56 × 5 = 75/280 - Add the two like fractions:
324/280 + 75/280 = 324 + 75/280 = 399/280 - 399/280 simplified gives 57/40
- So, 81/70 + 15/56 = 57/40
In mixed form: 117/40
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