Subtract 9/80 from 80/75, Solve 1 5/75

Subtract 9/80 from 80/75

1^st number: 1 5/75, 2^nd number: 9/80

80/75 - 9/80 is 229/240.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 80 is 1200

Next, find the equivalent fraction of both fractional numbers with denominator 1200
For the 1st fraction, since 75 × 16 = 1200,
80/75 = 80 × 16/75 × 16 = 1280/1200
Likewise, for the 2nd fraction, since 80 × 15 = 1200,
9/80 = 9 × 15/80 × 15 = 135/1200
Subtract the two like fractions:
1280/1200 - 135/1200 = 1280 - 135/1200 = 1145/1200
After reducing the fraction, the answer is 229/240

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