Subtract 30/27 from 9/72, Solve 9/72

Subtract 30/27 from 9/72

1^st number: 9/72, 2^nd number: 1 3/27

9/72 - 30/27 is -71/72.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 27 is 216

Next, find the equivalent fraction of both fractional numbers with denominator 216
For the 1st fraction, since 72 × 3 = 216,
9/72 = 9 × 3/72 × 3 = 27/216
Likewise, for the 2nd fraction, since 27 × 8 = 216,
30/27 = 30 × 8/27 × 8 = 240/216
Subtract the two like fractions:
27/216 - 240/216 = 27 - 240/216 = -213/216
After reducing the fraction, the answer is -71/72

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