Answers

Add 20/40 and 5/90

20/40 + 5/90 is 5/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 90 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   20/40 = 20 × 9/40 × 9 = 180/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   5/90 = 5 × 4/90 × 4 = 20/360
4. Add the two like fractions:
   180/360 + 20/360 = 180 + 20/360 = 200/360
5. 200/360 simplified gives 5/9
6. So, 20/40 + 5/90 = 5/9

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