Answers

Add 12/42 and 98/90

1^st number: 12/42, 2^nd number: 1 8/90

12/42 + 98/90 is 433/315.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 42 × 15 = 630,
   12/42 = 12 × 15/42 × 15 = 180/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   98/90 = 98 × 7/90 × 7 = 686/630
4. Add the two like fractions:
   180/630 + 686/630 = 180 + 686/630 = 866/630
5. 866/630 simplified gives 433/315
6. So, 12/42 + 98/90 = 433/315
   In mixed form: 1118/315

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