Subtract 1/42 from 63/90
63/90 - 1/42 is 71/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
63/90 = 63 × 7/90 × 7 = 441/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
1/42 = 1 × 15/42 × 15 = 15/630 - Subtract the two like fractions:
441/630 - 15/630 = 441 - 15/630 = 426/630 - After reducing the fraction, the answer is 71/105
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