Answers

Subtract 35/72 from 20/45

20/45 - 35/72 is -1/24.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 45 × 8 = 360,
   20/45 = 20 × 8/45 × 8 = 160/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   35/72 = 35 × 5/72 × 5 = 175/360
4. Subtract the two like fractions:
   160/360 - 175/360 = 160 - 175/360 = -15/360
5. After reducing the fraction, the answer is -1/24

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