Subtract 25/32 from 8/42
8/42 - 25/32 is -397/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 42 × 16 = 672,
8/42 = 8 × 16/42 × 16 = 128/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
25/32 = 25 × 21/32 × 21 = 525/672 - Subtract the two like fractions:
128/672 - 525/672 = 128 - 525/672 = -397/672
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