Subtract 80/14 from 30/72, Solve 30/72

Subtract 80/14 from 30/72

1^st number: 30/72, 2^nd number: 5 10/14

30/72 - 80/14 is -445/84.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 14 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
30/72 = 30 × 7/72 × 7 = 210/504
Likewise, for the 2nd fraction, since 14 × 36 = 504,
80/14 = 80 × 36/14 × 36 = 2880/504
Subtract the two like fractions:
210/504 - 2880/504 = 210 - 2880/504 = -2670/504
After reducing the fraction, the answer is -445/84

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