Answers

Subtract 70/72 from 2/20

2/20 - 70/72 is -157/180.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 20 × 18 = 360,
   2/20 = 2 × 18/20 × 18 = 36/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   70/72 = 70 × 5/72 × 5 = 350/360
4. Subtract the two like fractions:
   36/360 - 350/360 = 36 - 350/360 = -314/360
5. After reducing the fraction, the answer is -157/180

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