Subtract 4/90 from 20/24
20/24 - 4/90 is 71/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 24 × 15 = 360,
20/24 = 20 × 15/24 × 15 = 300/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
4/90 = 4 × 4/90 × 4 = 16/360 - Subtract the two like fractions:
300/360 - 16/360 = 300 - 16/360 = 284/360 - After reducing the fraction, the answer is 71/90
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