Answers

Subtract 18/70 from 45/20

1^st number: 2 5/20, 2^nd number: 18/70

45/20 - 18/70 is 279/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 70 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   45/20 = 45 × 7/20 × 7 = 315/140
3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
   18/70 = 18 × 2/70 × 2 = 36/140
4. Subtract the two like fractions:
   315/140 - 36/140 = 315 - 36/140 = 279/140
5. In mixed form: 1139/140

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