Subtract 24/28 from 40/70
40/70 - 24/28 is -2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
40/70 = 40 × 2/70 × 2 = 80/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
24/28 = 24 × 5/28 × 5 = 120/140 - Subtract the two like fractions:
80/140 - 120/140 = 80 - 120/140 = -40/140 - After reducing the fraction, the answer is -2/7
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