Subtract 1/5 from 45/72
45/72 - 1/5 is 17/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 5 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
45/72 = 45 × 5/72 × 5 = 225/360 - Likewise, for the 2nd fraction, since 5 × 72 = 360,
1/5 = 1 × 72/5 × 72 = 72/360 - Subtract the two like fractions:
225/360 - 72/360 = 225 - 72/360 = 153/360 - After reducing the fraction, the answer is 17/40
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