Subtract 9/90 from 42/98
42/98 - 9/90 is 23/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 90 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 98 × 45 = 4410,
42/98 = 42 × 45/98 × 45 = 1890/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
9/90 = 9 × 49/90 × 49 = 441/4410 - Subtract the two like fractions:
1890/4410 - 441/4410 = 1890 - 441/4410 = 1449/4410 - After reducing the fraction, the answer is 23/70
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