Subtract 63/42 from 8/45
1st number: 8/45, 2nd number: 1 21/42
8/45 - 63/42 is -119/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
8/45 = 8 × 14/45 × 14 = 112/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
63/42 = 63 × 15/42 × 15 = 945/630 - Subtract the two like fractions:
112/630 - 945/630 = 112 - 945/630 = -833/630 - After reducing the fraction, the answer is -119/90
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