Subtract 15/3 from 40/28
1st number: 1 12/28, 2nd number: 5 0/3
40/28 - 15/3 is -25/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 3 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
40/28 = 40 × 3/28 × 3 = 120/84 - Likewise, for the 2nd fraction, since 3 × 28 = 84,
15/3 = 15 × 28/3 × 28 = 420/84 - Subtract the two like fractions:
120/84 - 420/84 = 120 - 420/84 = -300/84 - After reducing the fraction, the answer is -25/7
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