Answers

Add 20/30 and 10/45

20/30 + 10/45 is 8/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 45 is 90
2. For the 1st fraction, since 30 × 3 = 90,
   20/30 = 20 × 3/30 × 3 = 60/90
3. Likewise, for the 2nd fraction, since 45 × 2 = 90,
   10/45 = 10 × 2/45 × 2 = 20/90
4. Add the two fractions:
   60/90 + 20/90 = 60 + 20/90 = 80/90
5. 80/90 simplified gives 8/9
6. So, 20/30 + 10/45 = 8/9

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