Subtract 90/28 from 18/80
1st number: 18/80, 2nd number: 3 6/28
18/80 - 90/28 is -837/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 28 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
18/80 = 18 × 7/80 × 7 = 126/560 - Likewise, for the 2nd fraction, since 28 × 20 = 560,
90/28 = 90 × 20/28 × 20 = 1800/560 - Subtract the two like fractions:
126/560 - 1800/560 = 126 - 1800/560 = -1674/560 - After reducing the fraction, the answer is -837/280
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