Subtract 49/72 from 20/90
20/90 - 49/72 is -11/24.
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,
20/90 = 20 × 4/90 × 4 = 80/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
49/72 = 49 × 5/72 × 5 = 245/360 - Subtract the two like fractions:
80/360 - 245/360 = 80 - 245/360 = -165/360 - After reducing the fraction, the answer is -11/24
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