Subtract 28/36 from 1/7
1/7 - 28/36 is -40/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 7 × 36 = 252,
1/7 = 1 × 36/7 × 36 = 36/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
28/36 = 28 × 7/36 × 7 = 196/252 - Subtract the two like fractions:
36/252 - 196/252 = 36 - 196/252 = -160/252 - After reducing the fraction, the answer is -40/63
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