Subtract 18/7 from 12/28
1st number: 12/28, 2nd number: 2 4/7
12/28 - 18/7 is -15/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
12/28 = 12 × 1/28 × 1 = 12/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
18/7 = 18 × 4/7 × 4 = 72/28 - Subtract the two like fractions:
12/28 - 72/28 = 12 - 72/28 = -60/28 - After reducing the fraction, the answer is -15/7
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