Answers

Subtract 40/14 from 30/18

1^st number: 1 12/18, 2^nd number: 2 12/14

30/18 - 40/14 is -25/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 14 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   30/18 = 30 × 7/18 × 7 = 210/126
3. Likewise, for the 2nd fraction, since 14 × 9 = 126,
   40/14 = 40 × 9/14 × 9 = 360/126
4. Subtract the two like fractions:
   210/126 - 360/126 = 210 - 360/126 = -150/126
5. After reducing the fraction, the answer is -25/21

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