Add 81/70 and 72/56
1st number: 1 11/70, 2nd number: 1 16/56
81/70 + 72/56 is 171/70.
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,
72/56 = 72 × 5/56 × 5 = 360/280 - Add the two like fractions:
324/280 + 360/280 = 324 + 360/280 = 684/280 - 684/280 simplified gives 171/70
- So, 81/70 + 72/56 = 171/70
In mixed form: 231/70
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