Subtract 90/80 from 5/9, Solve 5/9 - 1 10/80 as a fraction

Subtract 90/80 from 5/9

1^st number: 5/9, 2^nd number: 1 10/80

5/9 - 90/80 is -41/72.

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

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 9 × 80 = 720,
5/9 = 5 × 80/9 × 80 = 400/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
90/80 = 90 × 9/80 × 9 = 810/720
Subtract the two like fractions:
400/720 - 810/720 = 400 - 810/720 = -410/720
After reducing the fraction, the answer is -41/72

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