Subtract 45/70 from 90/7
1st number: 12 6/7, 2nd number: 45/70
90/7 - 45/70 is 171/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
90/7 = 90 × 10/7 × 10 = 900/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
45/70 = 45 × 1/70 × 1 = 45/70 - Subtract the two like fractions:
900/70 - 45/70 = 900 - 45/70 = 855/70 - After reducing the fraction, the answer is 171/14
- In mixed form: 123/14
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