Subtract 20/70 from 5/28
5/28 - 20/70 is -3/28.
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,
5/28 = 5 × 5/28 × 5 = 25/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
20/70 = 20 × 2/70 × 2 = 40/140 - Subtract the two like fractions:
25/140 - 40/140 = 25 - 40/140 = -15/140 - After reducing the fraction, the answer is -3/28
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