Subtract 27/90 from 12/7
1st number: 1 5/7, 2nd number: 27/90
12/7 - 27/90 is 99/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
12/7 = 12 × 90/7 × 90 = 1080/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
27/90 = 27 × 7/90 × 7 = 189/630 - Subtract the two like fractions:
1080/630 - 189/630 = 1080 - 189/630 = 891/630 - After reducing the fraction, the answer is 99/70
- In mixed form: 129/70
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