Subtract 70/84 from 28/36
28/36 - 70/84 is -1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
28/36 = 28 × 7/36 × 7 = 196/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
70/84 = 70 × 3/84 × 3 = 210/252 - Subtract the two like fractions:
196/252 - 210/252 = 196 - 210/252 = -14/252 - After reducing the fraction, the answer is -1/18
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