Answers

Add 90/72 and 42/50

1^st number: 1 18/72, 2^nd number: 42/50

90/72 + 42/50 is 209/100.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 50 is 1800
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1800
2. For the 1st fraction, since 72 × 25 = 1800,
   90/72 = 90 × 25/72 × 25 = 2250/1800
3. Likewise, for the 2nd fraction, since 50 × 36 = 1800,
   42/50 = 42 × 36/50 × 36 = 1512/1800
4. Add the two like fractions:
   2250/1800 + 1512/1800 = 2250 + 1512/1800 = 3762/1800
5. 3762/1800 simplified gives 209/100
6. So, 90/72 + 42/50 = 209/100
   In mixed form: 29/100

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