Subtract 20/14 from 42/45
1st number: 42/45, 2nd number: 1 6/14
42/45 - 20/14 is -52/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 14 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
42/45 = 42 × 14/45 × 14 = 588/630 - Likewise, for the 2nd fraction, since 14 × 45 = 630,
20/14 = 20 × 45/14 × 45 = 900/630 - Subtract the two like fractions:
588/630 - 900/630 = 588 - 900/630 = -312/630 - After reducing the fraction, the answer is -52/105
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