Subtract 80/21 from 42/25
1st number: 1 17/25, 2nd number: 3 17/21
42/25 - 80/21 is -1118/525.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 25 × 21 = 525,
42/25 = 42 × 21/25 × 21 = 882/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
80/21 = 80 × 25/21 × 25 = 2000/525 - Subtract the two like fractions:
882/525 - 2000/525 = 882 - 2000/525 = -1118/525
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