Subtract 21/7 from 98/5, Solve 19 3/5

Subtract 21/7 from 98/5

1^st number: 19 3/5, 2^nd number: 3 0/7

98/5 - 21/7 is 83/5.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35

Next, find the equivalent fraction of both fractional numbers with denominator 35
For the 1st fraction, since 5 × 7 = 35,
98/5 = 98 × 7/5 × 7 = 686/35
Likewise, for the 2nd fraction, since 7 × 5 = 35,
21/7 = 21 × 5/7 × 5 = 105/35
Subtract the two like fractions:
686/35 - 105/35 = 686 - 105/35 = 581/35
After reducing the fraction, the answer is 83/5
In mixed form: 163/5

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