Subtract 30/4 from 98/10, Solve 9 8/10

Subtract 30/4 from 98/10

1^st number: 9 8/10, 2^nd number: 7 2/4

98/10 - 30/4 is 23/10.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 4 is 20

Next, find the equivalent fraction of both fractional numbers with denominator 20
For the 1st fraction, since 10 × 2 = 20,
98/10 = 98 × 2/10 × 2 = 196/20
Likewise, for the 2nd fraction, since 4 × 5 = 20,
30/4 = 30 × 5/4 × 5 = 150/20
Subtract the two like fractions:
196/20 - 150/20 = 196 - 150/20 = 46/20
After reducing the fraction, the answer is 23/10
In mixed form: 23/10

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