Subtract 30/81 from 24/70
24/70 - 30/81 is -26/945.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 81 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 70 × 81 = 5670,
24/70 = 24 × 81/70 × 81 = 1944/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
30/81 = 30 × 70/81 × 70 = 2100/5670 - Subtract the two like fractions:
1944/5670 - 2100/5670 = 1944 - 2100/5670 = -156/5670 - After reducing the fraction, the answer is -26/945
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