Answers

Add 72/70 and 98/20

1^st number: 1 2/70, 2^nd number: 4 18/20

72/70 + 98/20 is 83/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 70 × 2 = 140,
   72/70 = 72 × 2/70 × 2 = 144/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   98/20 = 98 × 7/20 × 7 = 686/140
4. Add the two like fractions:
   144/140 + 686/140 = 144 + 686/140 = 830/140
5. 830/140 simplified gives 83/14
6. So, 72/70 + 98/20 = 83/14
   In mixed form: 513/14

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