Subtract 45/32 from 20/84
1st number: 20/84, 2nd number: 1 13/32
20/84 - 45/32 is -785/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 84 × 8 = 672,
20/84 = 20 × 8/84 × 8 = 160/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
45/32 = 45 × 21/32 × 21 = 945/672 - Subtract the two like fractions:
160/672 - 945/672 = 160 - 945/672 = -785/672
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