Answers

Subtract 30/90 from 30/35

30/35 - 30/90 is 11/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 35 × 18 = 630,
   30/35 = 30 × 18/35 × 18 = 540/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   30/90 = 30 × 7/90 × 7 = 210/630
4. Subtract the two like fractions:
   540/630 - 210/630 = 540 - 210/630 = 330/630
5. After reducing the fraction, the answer is 11/21

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