Subtract 40/75 from 21/10
1st number: 2 1/10, 2nd number: 40/75
21/10 - 40/75 is 47/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 75 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 10 × 15 = 150,
21/10 = 21 × 15/10 × 15 = 315/150 - Likewise, for the 2nd fraction, since 75 × 2 = 150,
40/75 = 40 × 2/75 × 2 = 80/150 - Subtract the two like fractions:
315/150 - 80/150 = 315 - 80/150 = 235/150 - After reducing the fraction, the answer is 47/30
- In mixed form: 117/30
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