Subtract 1/20 from 70/80
70/80 - 1/20 is 33/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
70/80 = 70 × 1/80 × 1 = 70/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
1/20 = 1 × 4/20 × 4 = 4/80 - Subtract the two like fractions:
70/80 - 4/80 = 70 - 4/80 = 66/80 - After reducing the fraction, the answer is 33/40
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