Subtract 10/75 from 7/90
7/90 - 10/75 is -1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 75 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 75 × 6 = 450,
10/75 = 10 × 6/75 × 6 = 60/450 - Subtract the two like fractions:
35/450 - 60/450 = 35 - 60/450 = -25/450 - After reducing the fraction, the answer is -1/18
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