Add 30/70 and 81/56
1st number: 30/70, 2nd number: 1 25/56
30/70 + 81/56 is 15/8.
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,
30/70 = 30 × 4/70 × 4 = 120/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
81/56 = 81 × 5/56 × 5 = 405/280 - Add the two like fractions:
120/280 + 405/280 = 120 + 405/280 = 525/280 - 525/280 simplified gives 15/8
- So, 30/70 + 81/56 = 15/8
In mixed form: 17/8
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