Subtract 40/20 from 42/64
1st number: 42/64, 2nd number: 2 0/20
42/64 - 40/20 is -43/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 20 is 320
Next, find the equivalent fraction of both fractional numbers with denominator 320 - For the 1st fraction, since 64 × 5 = 320,
42/64 = 42 × 5/64 × 5 = 210/320 - Likewise, for the 2nd fraction, since 20 × 16 = 320,
40/20 = 40 × 16/20 × 16 = 640/320 - Subtract the two like fractions:
210/320 - 640/320 = 210 - 640/320 = -430/320 - After reducing the fraction, the answer is -43/32
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