Subtract 98/54 from 45/21, Solve 2 3/21

Subtract 98/54 from 45/21

1^st number: 2 3/21, 2^nd number: 1 44/54

45/21 - 98/54 is 62/189.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 21 × 18 = 378,
45/21 = 45 × 18/21 × 18 = 810/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
98/54 = 98 × 7/54 × 7 = 686/378
Subtract the two like fractions:
810/378 - 686/378 = 810 - 686/378 = 124/378
After reducing the fraction, the answer is 62/189

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