Subtract 56/28 from 8/72, Solve 8/72

Subtract 56/28 from 8/72

1^st number: 8/72, 2^nd number: 2 0/28

8/72 - 56/28 is -17/9.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 28 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
8/72 = 8 × 7/72 × 7 = 56/504
Likewise, for the 2nd fraction, since 28 × 18 = 504,
56/28 = 56 × 18/28 × 18 = 1008/504
Subtract the two like fractions:
56/504 - 1008/504 = 56 - 1008/504 = -952/504
After reducing the fraction, the answer is -17/9

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