Answers

Add 90/72 and 18/56

1^st number: 1 18/72, 2^nd number: 18/56

90/72 + 18/56 is 11/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 56 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 56 × 9 = 504,
   18/56 = 18 × 9/56 × 9 = 162/504
4. Add the two like fractions:
   630/504 + 162/504 = 630 + 162/504 = 792/504
5. 792/504 simplified gives 11/7
6. So, 90/72 + 18/56 = 11/7
   In mixed form: 14/7

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