Subtract 42/12 from 90/36
1st number: 2 18/36, 2nd number: 3 6/12
90/36 - 42/12 is -1/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
90/36 = 90 × 1/36 × 1 = 90/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
42/12 = 42 × 3/12 × 3 = 126/36 - Subtract the two like fractions:
90/36 - 126/36 = 90 - 126/36 = -36/36 - After reducing the fraction, the answer is -1/1
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