Subtract 21/90 from 8/49
8/49 - 21/90 is -103/1470.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 90 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 49 × 90 = 4410,
8/49 = 8 × 90/49 × 90 = 720/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
21/90 = 21 × 49/90 × 49 = 1029/4410 - Subtract the two like fractions:
720/4410 - 1029/4410 = 720 - 1029/4410 = -309/4410 - After reducing the fraction, the answer is -103/1470
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