Subtract 21/45 from 90/30
1st number: 3 0/30, 2nd number: 21/45
90/30 - 21/45 is 38/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
90/30 = 90 × 3/30 × 3 = 270/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Subtract the two like fractions:
270/90 - 42/90 = 270 - 42/90 = 228/90 - After reducing the fraction, the answer is 38/15
- In mixed form: 28/15
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