Answers

Add 90/72 and 80/14

1^st number: 1 18/72, 2^nd number: 5 10/14

90/72 + 80/14 is 195/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 14 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 72 × 7 = 504,
   90/72 = 90 × 7/72 × 7 = 630/504
3. Likewise, for the 2nd fraction, since 14 × 36 = 504,
   80/14 = 80 × 36/14 × 36 = 2880/504
4. Add the two like fractions:
   630/504 + 2880/504 = 630 + 2880/504 = 3510/504
5. 3510/504 simplified gives 195/28
6. So, 90/72 + 80/14 = 195/28
   In mixed form: 627/28

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