Subtract 18/63 from 42/30
1st number: 1 12/30, 2nd number: 18/63
42/30 - 18/63 is 39/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
42/30 = 42 × 21/30 × 21 = 882/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
18/63 = 18 × 10/63 × 10 = 180/630 - Subtract the two like fractions:
882/630 - 180/630 = 882 - 180/630 = 702/630 - After reducing the fraction, the answer is 39/35
- In mixed form: 14/35
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