Subtract 7/10 from 90/7
1st number: 12 6/7, 2nd number: 7/10
90/7 - 7/10 is 851/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 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 10 × 7 = 70,
7/10 = 7 × 7/10 × 7 = 49/70 - Subtract the two like fractions:
900/70 - 49/70 = 900 - 49/70 = 851/70 - In mixed form: 1211/70
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