Subtract 10/7 from 90/80
1st number: 1 10/80, 2nd number: 1 3/7
90/80 - 10/7 is -17/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 7 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
90/80 = 90 × 7/80 × 7 = 630/560 - Likewise, for the 2nd fraction, since 7 × 80 = 560,
10/7 = 10 × 80/7 × 80 = 800/560 - Subtract the two like fractions:
630/560 - 800/560 = 630 - 800/560 = -170/560 - After reducing the fraction, the answer is -17/56
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