Answers

Subtract 50/90 from 12/20

12/20 - 50/90 is 2/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 90 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 20 × 9 = 180,
   12/20 = 12 × 9/20 × 9 = 108/180
3. Likewise, for the 2nd fraction, since 90 × 2 = 180,
   50/90 = 50 × 2/90 × 2 = 100/180
4. Subtract the two like fractions:
   108/180 - 100/180 = 108 - 100/180 = 8/180
5. After reducing the fraction, the answer is 2/45

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