Subtract 72/45 from 45/42
1st number: 1 3/42, 2nd number: 1 27/45
45/42 - 72/45 is -37/70.
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,
45/42 = 45 × 15/42 × 15 = 675/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
72/45 = 72 × 14/45 × 14 = 1008/630 - Subtract the two like fractions:
675/630 - 1008/630 = 675 - 1008/630 = -333/630 - After reducing the fraction, the answer is -37/70
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