Subtract 70/98 from 10/30
10/30 - 70/98 is -8/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 98 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 30 × 49 = 1470,
10/30 = 10 × 49/30 × 49 = 490/1470 - Likewise, for the 2nd fraction, since 98 × 15 = 1470,
70/98 = 70 × 15/98 × 15 = 1050/1470 - Subtract the two like fractions:
490/1470 - 1050/1470 = 490 - 1050/1470 = -560/1470 - After reducing the fraction, the answer is -8/21
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