Subtract 42/10 from 20/32
1st number: 20/32, 2nd number: 4 2/10
20/32 - 42/10 is -143/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 10 is 160
Next, find the equivalent fraction of both fractional numbers with denominator 160 - For the 1st fraction, since 32 × 5 = 160,
20/32 = 20 × 5/32 × 5 = 100/160 - Likewise, for the 2nd fraction, since 10 × 16 = 160,
42/10 = 42 × 16/10 × 16 = 672/160 - Subtract the two like fractions:
100/160 - 672/160 = 100 - 672/160 = -572/160 - After reducing the fraction, the answer is -143/40
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