Subtract 1/40 from 63/72
63/72 - 1/40 is 17/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
63/72 = 63 × 5/72 × 5 = 315/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
1/40 = 1 × 9/40 × 9 = 9/360 - Subtract the two like fractions:
315/360 - 9/360 = 315 - 9/360 = 306/360 - After reducing the fraction, the answer is 17/20
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