Answers

Add 49/10 and 42/90

1^st number: 4 9/10, 2^nd number: 42/90

49/10 + 42/90 is 161/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 90 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 10 × 9 = 90,
   49/10 = 49 × 9/10 × 9 = 441/90
3. Likewise, for the 2nd fraction, since 90 × 1 = 90,
   42/90 = 42 × 1/90 × 1 = 42/90
4. Add the two like fractions:
   441/90 + 42/90 = 441 + 42/90 = 483/90
5. 483/90 simplified gives 161/30
6. So, 49/10 + 42/90 = 161/30
   In mixed form: 511/30

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