Subtract 27/90 from 63/42
1st number: 1 21/42, 2nd number: 27/90
63/42 - 27/90 is 6/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
63/42 = 63 × 15/42 × 15 = 945/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
27/90 = 27 × 7/90 × 7 = 189/630 - Subtract the two like fractions:
945/630 - 189/630 = 945 - 189/630 = 756/630 - After reducing the fraction, the answer is 6/5
- In mixed form: 11/5
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