Subtract 75/90 from 70/98
70/98 - 75/90 is -5/42.
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,
70/98 = 70 × 45/98 × 45 = 3150/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
75/90 = 75 × 49/90 × 49 = 3675/4410 - Subtract the two like fractions:
3150/4410 - 3675/4410 = 3150 - 3675/4410 = -525/4410 - After reducing the fraction, the answer is -5/42
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