Subtract 7/30 from 18/28
18/28 - 7/30 is 43/105.
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,
18/28 = 18 × 15/28 × 15 = 270/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
7/30 = 7 × 14/30 × 14 = 98/420 - Subtract the two like fractions:
270/420 - 98/420 = 270 - 98/420 = 172/420 - After reducing the fraction, the answer is 43/105
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