Subtract 42/8 from 21/32
1st number: 21/32, 2nd number: 5 2/8
21/32 - 42/8 is -147/32.
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,
21/32 = 21 × 1/32 × 1 = 21/32 - Likewise, for the 2nd fraction, since 8 × 4 = 32,
42/8 = 42 × 4/8 × 4 = 168/32 - Subtract the two like fractions:
21/32 - 168/32 = 21 - 168/32 = -147/32
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