Answers

Add 90/72 and 70/18

1^st number: 1 18/72, 2^nd number: 3 16/18

90/72 + 70/18 is 185/36.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 18 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 72 × 1 = 72,
   90/72 = 90 × 1/72 × 1 = 90/72
3. Likewise, for the 2nd fraction, since 18 × 4 = 72,
   70/18 = 70 × 4/18 × 4 = 280/72
4. Add the two like fractions:
   90/72 + 280/72 = 90 + 280/72 = 370/72
5. 370/72 simplified gives 185/36
6. So, 90/72 + 70/18 = 185/36
   In mixed form: 55/36

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