Answers

Add 15/75 and 7/90

15/75 + 7/90 is 5/18.

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,
   15/75 = 15 × 6/75 × 6 = 90/450
3. Likewise, for the 2nd fraction, since 90 × 5 = 450,
   7/90 = 7 × 5/90 × 5 = 35/450
4. Add the two like fractions:
   90/450 + 35/450 = 90 + 35/450 = 125/450
5. 125/450 simplified gives 5/18
6. So, 15/75 + 7/90 = 5/18

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