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Subtract 90/45 from 7/49

1st number: 7/49, 2nd number: 2 0/45

7/49 - 90/45 is -13/7.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 45 is 2205

    Next, find the equivalent fraction of both fractional numbers with denominator 2205
  2. For the 1st fraction, since 49 × 45 = 2205,
    7/49 = 7 × 45/49 × 45 = 315/2205
  3. Likewise, for the 2nd fraction, since 45 × 49 = 2205,
    90/45 = 90 × 49/45 × 49 = 4410/2205
  4. Subtract the two like fractions:
    315/2205 - 4410/2205 = 315 - 4410/2205 = -4095/2205
  5. After reducing the fraction, the answer is -13/7

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