Answers

Add 80/75 and 12/90

1^st number: 1 5/75, 2^nd number: 12/90

80/75 + 12/90 is 6/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 90 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 75 × 6 = 450,
   80/75 = 80 × 6/75 × 6 = 480/450
3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
   12/90 = 12 × 5/90 × 5 = 60/450
4. Add the two like fractions:
   480/450 + 60/450 = 480 + 60/450 = 540/450
5. 540/450 simplified gives 6/5
6. So, 80/75 + 12/90 = 6/5
   In mixed form: 11/5

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