Subtract 42/25 from 90/21
1st number: 4 6/21, 2nd number: 1 17/25
90/21 - 42/25 is 456/175.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
90/21 = 90 × 25/21 × 25 = 2250/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
42/25 = 42 × 21/25 × 21 = 882/525 - Subtract the two like fractions:
2250/525 - 882/525 = 2250 - 882/525 = 1368/525 - After reducing the fraction, the answer is 456/175
- In mixed form: 2106/175
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