Subtract 20/42 from 45/32
1st number: 1 13/32, 2nd number: 20/42
45/32 - 20/42 is 625/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 42 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 32 × 21 = 672,
45/32 = 45 × 21/32 × 21 = 945/672 - Likewise, for the 2nd fraction, since 42 × 16 = 672,
20/42 = 20 × 16/42 × 16 = 320/672 - Subtract the two like fractions:
945/672 - 320/672 = 945 - 320/672 = 625/672
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