Subtract 40/10 from 7/98, Solve 7/98

Subtract 40/10 from 7/98

1^st number: 7/98, 2^nd number: 4 0/10

7/98 - 40/10 is -55/14.

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,
7/98 = 7 × 5/98 × 5 = 35/490
Likewise, for the 2nd fraction, since 10 × 49 = 490,
40/10 = 40 × 49/10 × 49 = 1960/490
Subtract the two like fractions:
35/490 - 1960/490 = 35 - 1960/490 = -1925/490
After reducing the fraction, the answer is -55/14

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