Subtract 45/3 from 42/30
1st number: 1 12/30, 2nd number: 15 0/3
42/30 - 45/3 is -68/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 3 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Likewise, for the 2nd fraction, since 3 × 10 = 30,
45/3 = 45 × 10/3 × 10 = 450/30 - Subtract the two like fractions:
42/30 - 450/30 = 42 - 450/30 = -408/30 - After reducing the fraction, the answer is -68/5
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