Subtract 80/7 from 90/70
1st number: 1 20/70, 2nd number: 11 3/7
90/70 - 80/7 is -71/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
90/70 = 90 × 1/70 × 1 = 90/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
80/7 = 80 × 10/7 × 10 = 800/70 - Subtract the two like fractions:
90/70 - 800/70 = 90 - 800/70 = -710/70 - After reducing the fraction, the answer is -71/7
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