Subtract 28/56 from 3/90
3/90 - 28/56 is -7/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 90 × 28 = 2520,
3/90 = 3 × 28/90 × 28 = 84/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
28/56 = 28 × 45/56 × 45 = 1260/2520 - Subtract the two like fractions:
84/2520 - 1260/2520 = 84 - 1260/2520 = -1176/2520 - After reducing the fraction, the answer is -7/15
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