Subtract 56/9 from 4/80, Solve 4/80

Subtract 56/9 from 4/80

1^st number: 4/80, 2^nd number: 6 2/9

4/80 - 56/9 is -1111/180.

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,
4/80 = 4 × 9/80 × 9 = 36/720
Likewise, for the 2nd fraction, since 9 × 80 = 720,
56/9 = 56 × 80/9 × 80 = 4480/720
Subtract the two like fractions:
36/720 - 4480/720 = 36 - 4480/720 = -4444/720
After reducing the fraction, the answer is -1111/180

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