Subtract 30/42 from 20/32
20/32 - 30/42 is -5/56.
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,
20/32 = 20 × 21/32 × 21 = 420/672 - Likewise, for the 2nd fraction, since 42 × 16 = 672,
30/42 = 30 × 16/42 × 16 = 480/672 - Subtract the two like fractions:
420/672 - 480/672 = 420 - 480/672 = -60/672 - After reducing the fraction, the answer is -5/56
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