Answers

Subtract 3/90 from 7/70

7/70 - 3/90 is 1/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 70 × 9 = 630,
   7/70 = 7 × 9/70 × 9 = 63/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   3/90 = 3 × 7/90 × 7 = 21/630
4. Subtract the two like fractions:
   63/630 - 21/630 = 63 - 21/630 = 42/630
5. After reducing the fraction, the answer is 1/15

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