Subtract 90/80 from 4/7
1st number: 4/7, 2nd number: 1 10/80
4/7 - 90/80 is -31/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
4/7 = 4 × 80/7 × 80 = 320/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
90/80 = 90 × 7/80 × 7 = 630/560 - Subtract the two like fractions:
320/560 - 630/560 = 320 - 630/560 = -310/560 - After reducing the fraction, the answer is -31/56
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