Subtract 30/63 from 5/70
5/70 - 30/63 is -17/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
5/70 = 5 × 9/70 × 9 = 45/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
30/63 = 30 × 10/63 × 10 = 300/630 - Subtract the two like fractions:
45/630 - 300/630 = 45 - 300/630 = -255/630 - After reducing the fraction, the answer is -17/42
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