Subtract 10/5 from 42/98, Solve 42/98

Subtract 10/5 from 42/98

1^st number: 42/98, 2^nd number: 2 0/5

42/98 - 10/5 is -11/7.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 5 is 490

Next, find the equivalent fraction of both fractional numbers with denominator 490
For the 1st fraction, since 98 × 5 = 490,
42/98 = 42 × 5/98 × 5 = 210/490
Likewise, for the 2nd fraction, since 5 × 98 = 490,
10/5 = 10 × 98/5 × 98 = 980/490
Subtract the two like fractions:
210/490 - 980/490 = 210 - 980/490 = -770/490
After reducing the fraction, the answer is -11/7

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