Subtract 84/8 from 21/4
1st number: 5 1/4, 2nd number: 10 4/8
21/4 - 84/8 is -21/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 8 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 4 × 2 = 8,
21/4 = 21 × 2/4 × 2 = 42/8 - Likewise, for the 2nd fraction, since 8 × 1 = 8,
84/8 = 84 × 1/8 × 1 = 84/8 - Subtract the two like fractions:
42/8 - 84/8 = 42 - 84/8 = -42/8 - After reducing the fraction, the answer is -21/4
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