Subtract 21/70 from 90/25
1st number: 3 15/25, 2nd number: 21/70
90/25 - 21/70 is 33/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 25 × 14 = 350,
90/25 = 90 × 14/25 × 14 = 1260/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
21/70 = 21 × 5/70 × 5 = 105/350 - Subtract the two like fractions:
1260/350 - 105/350 = 1260 - 105/350 = 1155/350 - After reducing the fraction, the answer is 33/10
- In mixed form: 33/10
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