Subtract 72/90 from 28/98
28/98 - 72/90 is -18/35.
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,
28/98 = 28 × 45/98 × 45 = 1260/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
72/90 = 72 × 49/90 × 49 = 3528/4410 - Subtract the two like fractions:
1260/4410 - 3528/4410 = 1260 - 3528/4410 = -2268/4410 - After reducing the fraction, the answer is -18/35
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