Answers

Subtract 70/75 from 21/18

1^st number: 1 3/18, 2^nd number: 70/75

21/18 - 70/75 is 7/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 75 is 450
   
   Next, find the equivalent fraction of both fractional numbers with denominator 450
2. For the 1st fraction, since 18 × 25 = 450,
   21/18 = 21 × 25/18 × 25 = 525/450
3. Likewise, for the 2nd fraction, since 75 × 6 = 450,
   70/75 = 70 × 6/75 × 6 = 420/450
4. Subtract the two like fractions:
   525/450 - 420/450 = 525 - 420/450 = 105/450
5. After reducing the fraction, the answer is 7/30

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