Subtract 54/45 from 3/42
1st number: 3/42, 2nd number: 1 9/45
3/42 - 54/45 is -79/70.
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,
3/42 = 3 × 15/42 × 15 = 45/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
54/45 = 54 × 14/45 × 14 = 756/630 - Subtract the two like fractions:
45/630 - 756/630 = 45 - 756/630 = -711/630 - After reducing the fraction, the answer is -79/70
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