Subtract 70/84 from 18/27
18/27 - 70/84 is -1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 84 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 27 × 28 = 756,
18/27 = 18 × 28/27 × 28 = 504/756 - Likewise, for the 2nd fraction, since 84 × 9 = 756,
70/84 = 70 × 9/84 × 9 = 630/756 - Subtract the two like fractions:
504/756 - 630/756 = 504 - 630/756 = -126/756 - After reducing the fraction, the answer is -1/6
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