Subtract 18/49 from 8/72, Solve 8/72

Subtract 18/49 from 8/72

8/72 - 18/49 is -113/441.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 49 is 3528

Next, find the equivalent fraction of both fractional numbers with denominator 3528
For the 1st fraction, since 72 × 49 = 3528,
8/72 = 8 × 49/72 × 49 = 392/3528
Likewise, for the 2nd fraction, since 49 × 72 = 3528,
18/49 = 18 × 72/49 × 72 = 1296/3528
Subtract the two like fractions:
392/3528 - 1296/3528 = 392 - 1296/3528 = -904/3528
After reducing the fraction, the answer is -113/441

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