Subtract 18/30 from 1/98, Solve 1/98

Subtract 18/30 from 1/98

1/98 - 18/30 is -289/490.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 30 is 1470

Next, find the equivalent fraction of both fractional numbers with denominator 1470
For the 1st fraction, since 98 × 15 = 1470,
1/98 = 1 × 15/98 × 15 = 15/1470
Likewise, for the 2nd fraction, since 30 × 49 = 1470,
18/30 = 18 × 49/30 × 49 = 882/1470
Subtract the two like fractions:
15/1470 - 882/1470 = 15 - 882/1470 = -867/1470
After reducing the fraction, the answer is -289/490

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