Answers

Add 81/30 and 70/56

1^st number: 2 21/30, 2^nd number: 1 14/56

81/30 + 70/56 is 79/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 56 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 30 × 28 = 840,
   81/30 = 81 × 28/30 × 28 = 2268/840
3. Likewise, for the 2nd fraction, since 56 × 15 = 840,
   70/56 = 70 × 15/56 × 15 = 1050/840
4. Add the two like fractions:
   2268/840 + 1050/840 = 2268 + 1050/840 = 3318/840
5. 3318/840 simplified gives 79/20
6. So, 81/30 + 70/56 = 79/20
   In mixed form: 319/20

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