Subtract 36/72 from 36/90
36/90 - 36/72 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
36/90 = 36 × 4/90 × 4 = 144/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
36/72 = 36 × 5/72 × 5 = 180/360 - Subtract the two like fractions:
144/360 - 180/360 = 144 - 180/360 = -36/360 - After reducing the fraction, the answer is -1/10
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Related: 72/90-36/72