Subtract 70/90 from 1/28
1/28 - 70/90 is -187/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
1/28 = 1 × 45/28 × 45 = 45/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
70/90 = 70 × 14/90 × 14 = 980/1260 - Subtract the two like fractions:
45/1260 - 980/1260 = 45 - 980/1260 = -935/1260 - After reducing the fraction, the answer is -187/252
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