Subtract 7/72 from 45/80, Solve 45/80

Subtract 7/72 from 45/80

45/80 - 7/72 is 67/144.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 72 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 80 × 9 = 720,
45/80 = 45 × 9/80 × 9 = 405/720
Likewise, for the 2nd fraction, since 72 × 10 = 720,
7/72 = 7 × 10/72 × 10 = 70/720
Subtract the two like fractions:
405/720 - 70/720 = 405 - 70/720 = 335/720
After reducing the fraction, the answer is 67/144

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