Answers

Subtract 80/18 from 7/40

1^st number: 7/40, 2^nd number: 4 8/18

7/40 - 80/18 is -1537/360.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 18 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   7/40 = 7 × 9/40 × 9 = 63/360
3. Likewise, for the 2nd fraction, since 18 × 20 = 360,
   80/18 = 80 × 20/18 × 20 = 1600/360
4. Subtract the two like fractions:
   63/360 - 1600/360 = 63 - 1600/360 = -1537/360

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