Subtract 75/90 from 49/72
49/72 - 75/90 is -11/72.
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,
49/72 = 49 × 5/72 × 5 = 245/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
75/90 = 75 × 4/90 × 4 = 300/360 - Subtract the two like fractions:
245/360 - 300/360 = 245 - 300/360 = -55/360 - After reducing the fraction, the answer is -11/72
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Related: 98/72-75/90