Answers

Add 70/42 and 98/70

1^st number: 1 28/42, 2^nd number: 1 28/70

70/42 + 98/70 is 46/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 70 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 42 × 5 = 210,
   70/42 = 70 × 5/42 × 5 = 350/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   98/70 = 98 × 3/70 × 3 = 294/210
4. Add the two like fractions:
   350/210 + 294/210 = 350 + 294/210 = 644/210
5. 644/210 simplified gives 46/15
6. So, 70/42 + 98/70 = 46/15
   In mixed form: 31/15

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