Answers

Add 84/70 and 54/72

1^st number: 1 14/70, 2^nd number: 54/72

84/70 + 54/72 is 39/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 72 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 70 × 36 = 2520,
   84/70 = 84 × 36/70 × 36 = 3024/2520
3. Likewise, for the 2nd fraction, since 72 × 35 = 2520,
   54/72 = 54 × 35/72 × 35 = 1890/2520
4. Add the two like fractions:
   3024/2520 + 1890/2520 = 3024 + 1890/2520 = 4914/2520
5. 4914/2520 simplified gives 39/20
6. So, 84/70 + 54/72 = 39/20
   In mixed form: 119/20

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