Subtract 21/8 from 42/32
1st number: 1 10/32, 2nd number: 2 5/8
42/32 - 21/8 is -21/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 8 is 32
Next, find the equivalent fraction of both fractional numbers with denominator 32 - For the 1st fraction, since 32 × 1 = 32,
42/32 = 42 × 1/32 × 1 = 42/32 - Likewise, for the 2nd fraction, since 8 × 4 = 32,
21/8 = 21 × 4/8 × 4 = 84/32 - Subtract the two like fractions:
42/32 - 84/32 = 42 - 84/32 = -42/32 - After reducing the fraction, the answer is -21/16
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