Answers

Subtract 20/40 from 8/30

8/30 - 20/40 is -7/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 40 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 30 × 4 = 120,
   8/30 = 8 × 4/30 × 4 = 32/120
3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
   20/40 = 20 × 3/40 × 3 = 60/120
4. Subtract the two like fractions:
   32/120 - 60/120 = 32 - 60/120 = -28/120
5. After reducing the fraction, the answer is -7/30

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