Subtract 9/90 from 9/72
9/72 - 9/90 is 1/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
9/90 = 9 × 4/90 × 4 = 36/360 - Subtract the two like fractions:
45/360 - 36/360 = 45 - 36/360 = 9/360 - After reducing the fraction, the answer is 1/40
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