Subtract 8/9 from 98/80, Solve 1 18/80

Subtract 8/9 from 98/80

1^st number: 1 18/80, 2^nd number: 8/9

98/80 - 8/9 is 121/360.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 80 × 9 = 720,
98/80 = 98 × 9/80 × 9 = 882/720
Likewise, for the 2nd fraction, since 9 × 80 = 720,
8/9 = 8 × 80/9 × 80 = 640/720
Subtract the two like fractions:
882/720 - 640/720 = 882 - 640/720 = 242/720
After reducing the fraction, the answer is 121/360

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