Answers

Add 21/7 and 98/90

1^st number: 3 0/7, 2^nd number: 1 8/90

21/7 + 98/90 is 184/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 7 × 90 = 630,
   21/7 = 21 × 90/7 × 90 = 1890/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   98/90 = 98 × 7/90 × 7 = 686/630
4. Add the two like fractions:
   1890/630 + 686/630 = 1890 + 686/630 = 2576/630
5. 2576/630 simplified gives 184/45
6. So, 21/7 + 98/90 = 184/45
   In mixed form: 44/45

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