Subtract 36/80 from 30/72, Solve 30/72

Subtract 36/80 from 30/72

30/72 - 36/80 is -1/30.

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

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 72 × 10 = 720,
30/72 = 30 × 10/72 × 10 = 300/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
36/80 = 36 × 9/80 × 9 = 324/720
Subtract the two like fractions:
300/720 - 324/720 = 300 - 324/720 = -24/720
After reducing the fraction, the answer is -1/30

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