Subtract 21/9 from 10/49, Solve 10/49

Subtract 21/9 from 10/49

1^st number: 10/49, 2^nd number: 2 3/9

10/49 - 21/9 is -313/147.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 9 is 441

Next, find the equivalent fraction of both fractional numbers with denominator 441
For the 1st fraction, since 49 × 9 = 441,
10/49 = 10 × 9/49 × 9 = 90/441
Likewise, for the 2nd fraction, since 9 × 49 = 441,
21/9 = 21 × 49/9 × 49 = 1029/441
Subtract the two like fractions:
90/441 - 1029/441 = 90 - 1029/441 = -939/441
After reducing the fraction, the answer is -313/147

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