Answers

Subtract 9/40 from 10/72

10/72 - 9/40 is -31/360.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 40 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 72 × 5 = 360,
   10/72 = 10 × 5/72 × 5 = 50/360
3. Likewise, for the 2nd fraction, since 40 × 9 = 360,
   9/40 = 9 × 9/40 × 9 = 81/360
4. Subtract the two like fractions:
   50/360 - 81/360 = 50 - 81/360 = -31/360

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