Subtract 12/3 from 42/90
1st number: 42/90, 2nd number: 4 0/3
42/90 - 12/3 is -53/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 3 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90 - Likewise, for the 2nd fraction, since 3 × 30 = 90,
12/3 = 12 × 30/3 × 30 = 360/90 - Subtract the two like fractions:
42/90 - 360/90 = 42 - 360/90 = -318/90 - After reducing the fraction, the answer is -53/15
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