Answers

Subtract 64/70 from 48/90

48/90 - 64/70 is -8/21.

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,
   48/90 = 48 × 7/90 × 7 = 336/630
3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
   64/70 = 64 × 9/70 × 9 = 576/630
4. Subtract the two like fractions:
   336/630 - 576/630 = 336 - 576/630 = -240/630
5. After reducing the fraction, the answer is -8/21

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