Subtract 20/70 from 72/63
1st number: 1 9/63, 2nd number: 20/70
72/63 - 20/70 is 6/7.
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,
72/63 = 72 × 10/63 × 10 = 720/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
20/70 = 20 × 9/70 × 9 = 180/630 - Subtract the two like fractions:
720/630 - 180/630 = 720 - 180/630 = 540/630 - After reducing the fraction, the answer is 6/7
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