Subtract 42/18 from 90/75
1st number: 1 15/75, 2nd number: 2 6/18
90/75 - 42/18 is -17/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
90/75 = 90 × 6/75 × 6 = 540/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
42/18 = 42 × 25/18 × 25 = 1050/450 - Subtract the two like fractions:
540/450 - 1050/450 = 540 - 1050/450 = -510/450 - After reducing the fraction, the answer is -17/15
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