Subtract 45/30 from 8/28
1st number: 8/28, 2nd number: 1 15/30
8/28 - 45/30 is -17/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
8/28 = 8 × 15/28 × 15 = 120/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
45/30 = 45 × 14/30 × 14 = 630/420 - Subtract the two like fractions:
120/420 - 630/420 = 120 - 630/420 = -510/420 - After reducing the fraction, the answer is -17/14
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