Subtract 45/21 from 90/14
1st number: 6 6/14, 2nd number: 2 3/21
90/14 - 45/21 is 30/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
90/14 = 90 × 3/14 × 3 = 270/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
45/21 = 45 × 2/21 × 2 = 90/42 - Subtract the two like fractions:
270/42 - 90/42 = 270 - 90/42 = 180/42 - After reducing the fraction, the answer is 30/7
- In mixed form: 42/7
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