Subtract 60/98 from 45/80, Solve 45/80

Subtract 60/98 from 45/80

45/80 - 60/98 is -39/784.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 98 is 3920

Next, find the equivalent fraction of both fractional numbers with denominator 3920
For the 1st fraction, since 80 × 49 = 3920,
45/80 = 45 × 49/80 × 49 = 2205/3920
Likewise, for the 2nd fraction, since 98 × 40 = 3920,
60/98 = 60 × 40/98 × 40 = 2400/3920
Subtract the two like fractions:
2205/3920 - 2400/3920 = 2205 - 2400/3920 = -195/3920
After reducing the fraction, the answer is -39/784

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