Subtract 15/72 from 18/49, Solve 18/49

Subtract 15/72 from 18/49

18/49 - 15/72 is 187/1176.

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

Next, find the equivalent fraction of both fractional numbers with denominator 3528
For the 1st fraction, since 49 × 72 = 3528,
18/49 = 18 × 72/49 × 72 = 1296/3528
Likewise, for the 2nd fraction, since 72 × 49 = 3528,
15/72 = 15 × 49/72 × 49 = 735/3528
Subtract the two like fractions:
1296/3528 - 735/3528 = 1296 - 735/3528 = 561/3528
After reducing the fraction, the answer is 187/1176

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