Subtract 25/21 from 70/75
1st number: 70/75, 2nd number: 1 4/21
70/75 - 25/21 is -9/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
70/75 = 70 × 7/75 × 7 = 490/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
25/21 = 25 × 25/21 × 25 = 625/525 - Subtract the two like fractions:
490/525 - 625/525 = 490 - 625/525 = -135/525 - After reducing the fraction, the answer is -9/35
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