Answers

Subtract 42/18 from 56/30

1^st number: 1 26/30, 2^nd number: 2 6/18

56/30 - 42/18 is -7/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 18 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 30 × 3 = 90,
   56/30 = 56 × 3/30 × 3 = 168/90
3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
   42/18 = 42 × 5/18 × 5 = 210/90
4. Subtract the two like fractions:
   168/90 - 210/90 = 168 - 210/90 = -42/90
5. After reducing the fraction, the answer is -7/15

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