Subtract 21/10 from 90/75
1st number: 1 15/75, 2nd number: 2 1/10
90/75 - 21/10 is -9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 10 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 75 × 2 = 150,
90/75 = 90 × 2/75 × 2 = 180/150 - Likewise, for the 2nd fraction, since 10 × 15 = 150,
21/10 = 21 × 15/10 × 15 = 315/150 - Subtract the two like fractions:
180/150 - 315/150 = 180 - 315/150 = -135/150 - After reducing the fraction, the answer is -9/10
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