Answers

Subtract 42/30 from 8/18

1^st number: 8/18, 2^nd number: 1 12/30

8/18 - 42/30 is -43/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 30 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 18 × 5 = 90,
   8/18 = 8 × 5/18 × 5 = 40/90
3. Likewise, for the 2nd fraction, since 30 × 3 = 90,
   42/30 = 42 × 3/30 × 3 = 126/90
4. Subtract the two like fractions:
   40/90 - 126/90 = 40 - 126/90 = -86/90
5. After reducing the fraction, the answer is -43/45

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