Subtract 21/49 from 10/18, Solve 10/18

Subtract 21/49 from 10/18

10/18 - 21/49 is 8/63.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 49 is 882

Next, find the equivalent fraction of both fractional numbers with denominator 882
For the 1st fraction, since 18 × 49 = 882,
10/18 = 10 × 49/18 × 49 = 490/882
Likewise, for the 2nd fraction, since 49 × 18 = 882,
21/49 = 21 × 18/49 × 18 = 378/882
Subtract the two like fractions:
490/882 - 378/882 = 490 - 378/882 = 112/882
After reducing the fraction, the answer is 8/63

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