Subtract 70/75 from 4/21
4/21 - 70/75 is -26/35.
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,
70/75 = 70 × 7/75 × 7 = 490/525 - Subtract the two like fractions:
100/525 - 490/525 = 100 - 490/525 = -390/525 - After reducing the fraction, the answer is -26/35
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