Answers

Add 90/50 and 42/90

1^st number: 1 40/50, 2^nd number: 42/90

90/50 + 42/90 is 34/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 90 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 50 × 9 = 450,
   90/50 = 90 × 9/50 × 9 = 810/450
3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
   42/90 = 42 × 5/90 × 5 = 210/450
4. Add the two like fractions:
   810/450 + 210/450 = 810 + 210/450 = 1020/450
5. 1020/450 simplified gives 34/15
6. So, 90/50 + 42/90 = 34/15
   In mixed form: 24/15

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