Answers

Add 72/84 and 56/8

1^st number: 72/84, 2^nd number: 7 0/8

72/84 + 56/8 is 55/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 8 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 84 × 2 = 168,
   72/84 = 72 × 2/84 × 2 = 144/168
3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
   56/8 = 56 × 21/8 × 21 = 1176/168
4. Add the two like fractions:
   144/168 + 1176/168 = 144 + 1176/168 = 1320/168
5. 1320/168 simplified gives 55/7
6. So, 72/84 + 56/8 = 55/7
   In mixed form: 76/7

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