Subtract 80/70 from 30/63
1st number: 30/63, 2nd number: 1 10/70
30/63 - 80/70 is -2/3.
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,
30/63 = 30 × 10/63 × 10 = 300/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
80/70 = 80 × 9/70 × 9 = 720/630 - Subtract the two like fractions:
300/630 - 720/630 = 300 - 720/630 = -420/630 - After reducing the fraction, the answer is -2/3
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