Answers

Add 1/90 and 54/42

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

1/90 + 54/42 is 817/630.

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,
   1/90 = 1 × 7/90 × 7 = 7/630
3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
   54/42 = 54 × 15/42 × 15 = 810/630
4. Add the two like fractions:
   7/630 + 810/630 = 7 + 810/630 = 817/630
5. So, 1/90 + 54/42 = 817/630
   In mixed form: 1187/630

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