Subtract 20/70 from 4/63
4/63 - 20/70 is -2/9.
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,
4/63 = 4 × 10/63 × 10 = 40/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
20/70 = 20 × 9/70 × 9 = 180/630 - Subtract the two like fractions:
40/630 - 180/630 = 40 - 180/630 = -140/630 - After reducing the fraction, the answer is -2/9
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