Subtract 7/9 from 20/50
20/50 - 7/9 is -17/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 9 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
20/50 = 20 × 9/50 × 9 = 180/450 - Likewise, for the 2nd fraction, since 9 × 50 = 450,
7/9 = 7 × 50/9 × 50 = 350/450 - Subtract the two like fractions:
180/450 - 350/450 = 180 - 350/450 = -170/450 - After reducing the fraction, the answer is -17/45
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