Subtract 96/24 from 21/30, Solve 21/30

Subtract 96/24 from 21/30

1^st number: 21/30, 2^nd number: 4 0/24

21/30 - 96/24 is -33/10.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 24 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 30 × 4 = 120,
21/30 = 21 × 4/30 × 4 = 84/120
Likewise, for the 2nd fraction, since 24 × 5 = 120,
96/24 = 96 × 5/24 × 5 = 480/120
Subtract the two like fractions:
84/120 - 480/120 = 84 - 480/120 = -396/120
After reducing the fraction, the answer is -33/10

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