Answers

Subtract 21/56 from 50/90

50/90 - 21/56 is 13/72.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 56 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 90 × 28 = 2520,
   50/90 = 50 × 28/90 × 28 = 1400/2520
3. Likewise, for the 2nd fraction, since 56 × 45 = 2520,
   21/56 = 21 × 45/56 × 45 = 945/2520
4. Subtract the two like fractions:
   1400/2520 - 945/2520 = 1400 - 945/2520 = 455/2520
5. After reducing the fraction, the answer is 13/72

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