Subtract 40/70 from 9/28
9/28 - 40/70 is -1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
9/28 = 9 × 5/28 × 5 = 45/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
40/70 = 40 × 2/70 × 2 = 80/140 - Subtract the two like fractions:
45/140 - 80/140 = 45 - 80/140 = -35/140 - After reducing the fraction, the answer is -1/4
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