Subtract 90/45 from 75/42
1st number: 1 33/42, 2nd number: 2 0/45
75/42 - 90/45 is -3/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
75/42 = 75 × 15/42 × 15 = 1125/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
90/45 = 90 × 14/45 × 14 = 1260/630 - Subtract the two like fractions:
1125/630 - 1260/630 = 1125 - 1260/630 = -135/630 - After reducing the fraction, the answer is -3/14
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