Answers

Add 20/70 and 84/72

1^st number: 20/70, 2^nd number: 1 12/72

20/70 + 84/72 is 61/42.

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,
   20/70 = 20 × 36/70 × 36 = 720/2520
3. Likewise, for the 2nd fraction, since 72 × 35 = 2520,
   84/72 = 84 × 35/72 × 35 = 2940/2520
4. Add the two like fractions:
   720/2520 + 2940/2520 = 720 + 2940/2520 = 3660/2520
5. 3660/2520 simplified gives 61/42
6. So, 20/70 + 84/72 = 61/42
   In mixed form: 119/42

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