Answers

Add 42/90 and 35/20

1^st number: 42/90, 2^nd number: 1 15/20

42/90 + 35/20 is 133/60.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 90 × 2 = 180,
   42/90 = 42 × 2/90 × 2 = 84/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   35/20 = 35 × 9/20 × 9 = 315/180
4. Add the two like fractions:
   84/180 + 315/180 = 84 + 315/180 = 399/180
5. 399/180 simplified gives 133/60
6. So, 42/90 + 35/20 = 133/60
   In mixed form: 213/60

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