Answers

Subtract 70/20 from 4/45

1^st number: 4/45, 2^nd number: 3 10/20

4/45 - 70/20 is -307/90.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 20 is 180
   
   Next, find the equivalent fraction of both fractional numbers with denominator 180
2. For the 1st fraction, since 45 × 4 = 180,
   4/45 = 4 × 4/45 × 4 = 16/180
3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
   70/20 = 70 × 9/20 × 9 = 630/180
4. Subtract the two like fractions:
   16/180 - 630/180 = 16 - 630/180 = -614/180
5. After reducing the fraction, the answer is -307/90

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