Subtract 63/70 from 7/63
7/63 - 63/70 is -71/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
7/63 = 7 × 10/63 × 10 = 70/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
63/70 = 63 × 9/70 × 9 = 567/630 - Subtract the two like fractions:
70/630 - 567/630 = 70 - 567/630 = -497/630 - After reducing the fraction, the answer is -71/90
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