Subtract 18/72 from 3/14, Solve 3/14

Subtract 18/72 from 3/14

3/14 - 18/72 is -1/28.

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

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 14 × 36 = 504,
3/14 = 3 × 36/14 × 36 = 108/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
18/72 = 18 × 7/72 × 7 = 126/504
Subtract the two like fractions:
108/504 - 126/504 = 108 - 126/504 = -18/504
After reducing the fraction, the answer is -1/28

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