Subtract 21/18 from 10/56, Solve 10/56

Subtract 21/18 from 10/56

1^st number: 10/56, 2^nd number: 1 3/18

10/56 - 21/18 is -83/84.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 18 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 56 × 9 = 504,
10/56 = 10 × 9/56 × 9 = 90/504
Likewise, for the 2nd fraction, since 18 × 28 = 504,
21/18 = 21 × 28/18 × 28 = 588/504
Subtract the two like fractions:
90/504 - 588/504 = 90 - 588/504 = -498/504
After reducing the fraction, the answer is -83/84

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