Answers

Add 81/15 and 70/72

1^st number: 5 6/15, 2^nd number: 70/72

81/15 + 70/72 is 1147/180.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 15 × 24 = 360,
   81/15 = 81 × 24/15 × 24 = 1944/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   70/72 = 70 × 5/72 × 5 = 350/360
4. Add the two like fractions:
   1944/360 + 350/360 = 1944 + 350/360 = 2294/360
5. 2294/360 simplified gives 1147/180
6. So, 81/15 + 70/72 = 1147/180
   In mixed form: 667/180

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