Answers

Add 72/63 and 40/6

1^st number: 1 9/63, 2^nd number: 6 4/6

72/63 + 40/6 is 164/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 6 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 63 × 2 = 126,
   72/63 = 72 × 2/63 × 2 = 144/126
3. Likewise, for the 2nd fraction, since 6 × 21 = 126,
   40/6 = 40 × 21/6 × 21 = 840/126
4. Add the two like fractions:
   144/126 + 840/126 = 144 + 840/126 = 984/126
5. 984/126 simplified gives 164/21
6. So, 72/63 + 40/6 = 164/21
   In mixed form: 717/21

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