Subtract 42/45 from 45/50
45/50 - 42/45 is -1/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 45 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
45/50 = 45 × 9/50 × 9 = 405/450 - Likewise, for the 2nd fraction, since 45 × 10 = 450,
42/45 = 42 × 10/45 × 10 = 420/450 - Subtract the two like fractions:
405/450 - 420/450 = 405 - 420/450 = -15/450 - After reducing the fraction, the answer is -1/30
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