Subtract 42/30 from 12/63
1st number: 12/63, 2nd number: 1 12/30
12/63 - 42/30 is -127/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
12/63 = 12 × 10/63 × 10 = 120/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
42/30 = 42 × 21/30 × 21 = 882/630 - Subtract the two like fractions:
120/630 - 882/630 = 120 - 882/630 = -762/630 - After reducing the fraction, the answer is -127/105
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