Answers

Add 4/70 and 98/90

1^st number: 4/70, 2^nd number: 1 8/90

4/70 + 98/90 is 361/315.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 70 × 9 = 630,
   4/70 = 4 × 9/70 × 9 = 36/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   98/90 = 98 × 7/90 × 7 = 686/630
4. Add the two like fractions:
   36/630 + 686/630 = 36 + 686/630 = 722/630
5. 722/630 simplified gives 361/315
6. So, 4/70 + 98/90 = 361/315
   In mixed form: 146/315

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