Subtract 42/75 from 4/21
4/21 - 42/75 is -194/525.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 75 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
4/21 = 4 × 25/21 × 25 = 100/525 - Likewise, for the 2nd fraction, since 75 × 7 = 525,
42/75 = 42 × 7/75 × 7 = 294/525 - Subtract the two like fractions:
100/525 - 294/525 = 100 - 294/525 = -194/525
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