Subtract 18/50 from 7/90
7/90 - 18/50 is -127/450.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 50 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
7/90 = 7 × 5/90 × 5 = 35/450 - Likewise, for the 2nd fraction, since 50 × 9 = 450,
18/50 = 18 × 9/50 × 9 = 162/450 - Subtract the two like fractions:
35/450 - 162/450 = 35 - 162/450 = -127/450
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