Answers

Subtract 2/70 from 4/90

4/90 - 2/70 is 1/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 70 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   4/90 = 4 × 7/90 × 7 = 28/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   2/70 = 2 × 9/70 × 9 = 18/630
4. Subtract the two like fractions:
   28/630 - 18/630 = 28 - 18/630 = 10/630
5. After reducing the fraction, the answer is 1/63

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