Subtract 42/45 from 8/28
8/28 - 42/45 is -68/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
8/28 = 8 × 45/28 × 45 = 360/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
42/45 = 42 × 28/45 × 28 = 1176/1260 - Subtract the two like fractions:
360/1260 - 1176/1260 = 360 - 1176/1260 = -816/1260 - After reducing the fraction, the answer is -68/105
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