Subtract 80/98 from 50/72, Solve 50/72

Subtract 80/98 from 50/72

50/72 - 80/98 is -215/1764.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 98 is 3528

Next, find the equivalent fraction of both fractional numbers with denominator 3528
For the 1st fraction, since 72 × 49 = 3528,
50/72 = 50 × 49/72 × 49 = 2450/3528
Likewise, for the 2nd fraction, since 98 × 36 = 3528,
80/98 = 80 × 36/98 × 36 = 2880/3528
Subtract the two like fractions:
2450/3528 - 2880/3528 = 2450 - 2880/3528 = -430/3528
After reducing the fraction, the answer is -215/1764

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