Answers

Add 72/70 and 84/40

1^st number: 1 2/70, 2^nd number: 2 4/40

72/70 + 84/40 is 219/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 70 × 4 = 280,
   72/70 = 72 × 4/70 × 4 = 288/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   84/40 = 84 × 7/40 × 7 = 588/280
4. Add the two like fractions:
   288/280 + 588/280 = 288 + 588/280 = 876/280
5. 876/280 simplified gives 219/70
6. So, 72/70 + 84/40 = 219/70
   In mixed form: 39/70

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