Subtract 20/9 from 2/80, Solve 2/80

Subtract 20/9 from 2/80

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

2/80 - 20/9 is -791/360.

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,
2/80 = 2 × 9/80 × 9 = 18/720
Likewise, for the 2nd fraction, since 9 × 80 = 720,
20/9 = 20 × 80/9 × 80 = 1600/720
Subtract the two like fractions:
18/720 - 1600/720 = 18 - 1600/720 = -1582/720
After reducing the fraction, the answer is -791/360

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