Answers

Add 84/10 and 42/72

1^st number: 8 4/10, 2^nd number: 42/72

84/10 + 42/72 is 539/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 10 × 36 = 360,
   84/10 = 84 × 36/10 × 36 = 3024/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   42/72 = 42 × 5/72 × 5 = 210/360
4. Add the two like fractions:
   3024/360 + 210/360 = 3024 + 210/360 = 3234/360
5. 3234/360 simplified gives 539/60
6. So, 84/10 + 42/72 = 539/60
   In mixed form: 859/60

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