Subtract 12/10 from 40/98, Solve 40/98

Subtract 12/10 from 40/98

1^st number: 40/98, 2^nd number: 1 2/10

40/98 - 12/10 is -194/245.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 10 is 490

Next, find the equivalent fraction of both fractional numbers with denominator 490
For the 1st fraction, since 98 × 5 = 490,
40/98 = 40 × 5/98 × 5 = 200/490
Likewise, for the 2nd fraction, since 10 × 49 = 490,
12/10 = 12 × 49/10 × 49 = 588/490
Subtract the two like fractions:
200/490 - 588/490 = 200 - 588/490 = -388/490
After reducing the fraction, the answer is -194/245

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