Subtract 81/9 from 30/70
1st number: 30/70, 2nd number: 9 0/9
30/70 - 81/9 is -60/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
30/70 = 30 × 9/70 × 9 = 270/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
81/9 = 81 × 70/9 × 70 = 5670/630 - Subtract the two like fractions:
270/630 - 5670/630 = 270 - 5670/630 = -5400/630 - After reducing the fraction, the answer is -60/7
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