Answers

Add 8/90 and 63/42

1^st number: 8/90, 2^nd number: 1 21/42

8/90 + 63/42 is 143/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 42 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   8/90 = 8 × 7/90 × 7 = 56/630
3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
   63/42 = 63 × 15/42 × 15 = 945/630
4. Add the two like fractions:
   56/630 + 945/630 = 56 + 945/630 = 1001/630
5. 1001/630 simplified gives 143/90
6. So, 8/90 + 63/42 = 143/90
   In mixed form: 153/90

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