Subtract 45/8 from 42/98, Solve 42/98

Subtract 45/8 from 42/98

1^st number: 42/98, 2^nd number: 5 5/8

42/98 - 45/8 is -291/56.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 8 is 392

Next, find the equivalent fraction of both fractional numbers with denominator 392
For the 1st fraction, since 98 × 4 = 392,
42/98 = 42 × 4/98 × 4 = 168/392
Likewise, for the 2nd fraction, since 8 × 49 = 392,
45/8 = 45 × 49/8 × 49 = 2205/392
Subtract the two like fractions:
168/392 - 2205/392 = 168 - 2205/392 = -2037/392
After reducing the fraction, the answer is -291/56

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