Answers

Add 63/90 and 54/42

1^st number: 63/90, 2^nd number: 1 12/42

63/90 + 54/42 is 139/70.

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,
   63/90 = 63 × 7/90 × 7 = 441/630
3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
   54/42 = 54 × 15/42 × 15 = 810/630
4. Add the two like fractions:
   441/630 + 810/630 = 441 + 810/630 = 1251/630
5. 1251/630 simplified gives 139/70
6. So, 63/90 + 54/42 = 139/70
   In mixed form: 169/70

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