Answers

Add 72/14 and 75/90

1^st number: 5 2/14, 2^nd number: 75/90

72/14 + 75/90 is 251/42.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 14 × 45 = 630,
   72/14 = 72 × 45/14 × 45 = 3240/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   75/90 = 75 × 7/90 × 7 = 525/630
4. Add the two like fractions:
   3240/630 + 525/630 = 3240 + 525/630 = 3765/630
5. 3765/630 simplified gives 251/42
6. So, 72/14 + 75/90 = 251/42
   In mixed form: 541/42

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