Answers

Subtract 35/90 from 7/70

7/70 - 35/90 is -13/45.

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,
   35/90 = 35 × 7/90 × 7 = 245/630
4. Subtract the two like fractions:
   63/630 - 245/630 = 63 - 245/630 = -182/630
5. After reducing the fraction, the answer is -13/45

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