Subtract 42/90 from 75/30
1st number: 2 15/30, 2nd number: 42/90
75/30 - 42/90 is 61/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
75/30 = 75 × 3/30 × 3 = 225/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90 - Subtract the two like fractions:
225/90 - 42/90 = 225 - 42/90 = 183/90 - After reducing the fraction, the answer is 61/30
- In mixed form: 21/30
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