Answers

Add 20/12 and 50/90

1^st number: 1 8/12, 2^nd number: 50/90

20/12 + 50/90 is 20/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 12 × 15 = 180,
   20/12 = 20 × 15/12 × 15 = 300/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   50/90 = 50 × 2/90 × 2 = 100/180
4. Add the two like fractions:
   300/180 + 100/180 = 300 + 100/180 = 400/180
5. 400/180 simplified gives 20/9
6. So, 20/12 + 50/90 = 20/9
   In mixed form: 22/9

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