Subtract 5/21 from 98/18, Solve 5 8/18

Subtract 5/21 from 98/18

1^st number: 5 8/18, 2^nd number: 5/21

98/18 - 5/21 is 328/63.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
98/18 = 98 × 7/18 × 7 = 686/126
Likewise, for the 2nd fraction, since 21 × 6 = 126,
5/21 = 5 × 6/21 × 6 = 30/126
Subtract the two like fractions:
686/126 - 30/126 = 686 - 30/126 = 656/126
After reducing the fraction, the answer is 328/63
In mixed form: 513/63

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