Answers

Add 18/90 and 6/40

18/90 + 6/40 is 7/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 90 × 4 = 360,
   18/90 = 18 × 4/90 × 4 = 72/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   6/40 = 6 × 9/40 × 9 = 54/360
4. Add the two like fractions:
   72/360 + 54/360 = 72 + 54/360 = 126/360
5. 126/360 simplified gives 7/20
6. So, 18/90 + 6/40 = 7/20

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