Subtract 20/24 from 7/70
7/70 - 20/24 is -11/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 24 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 70 × 12 = 840,
7/70 = 7 × 12/70 × 12 = 84/840 - Likewise, for the 2nd fraction, since 24 × 35 = 840,
20/24 = 20 × 35/24 × 35 = 700/840 - Subtract the two like fractions:
84/840 - 700/840 = 84 - 700/840 = -616/840 - After reducing the fraction, the answer is -11/15
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